A concrete raw material admixture powder density measuring device
By designing an automated concrete raw material admixture powder density measuring device, and utilizing components such as a lifting plate and a water pump, automated weighing and liquid level control were achieved, solving the problems of long time consumption and large errors in Leigh bottle testing, and improving the accuracy and efficiency of measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU TRAFFIC ENG TESTING CENT CO LTD
- Filing Date
- 2025-03-26
- Publication Date
- 2026-06-02
AI Technical Summary
Existing technologies for testing the density of admixture powder using Leigh flasks in concrete production suffer from problems such as demanding experimental conditions, long testing time, complex operation, and susceptibility to errors.
A device for measuring the density of concrete raw material admixture powder was designed. It utilizes components such as a lifting plate, an electric push rod, and a water pump to achieve automated weighing and liquid level control. The liquid level height is recorded by a level gauge, the electric push rod pushes the sealing head to separate from the placement hopper, the water pump draws clean water to the target liquid level, and the built-in chip of the electronic scale calculates the density value in real time.
It simplifies the operation process, reduces human error, improves the accuracy and efficiency of measurement, and overcomes the shortcomings of Leigh bottle detection.
Smart Images
Figure CN224317464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of admixture powder detection technology, specifically a device for measuring the density of concrete raw material admixture powder. Background Technology
[0002] Currently, concrete production companies, testing units, and university laboratories generally use Leigh flasks to test the density of cement or concrete mineral admixture powder. The process requires maintaining a constant temperature in the water bath at 20°C ± 1°C, and the Leigh flask needs to be kept at this temperature for 30 minutes. This initial step is time-consuming. During the process, the cement or mineral admixture powder needs to be added to the Leigh flask little by little, which is labor-intensive and prone to clogging or sticking to the flask walls, preventing the experiment from proceeding normally. Furthermore, two manual volume readings are required at the beginning and end, which can easily introduce errors. Overall, this method has demanding experimental conditions, is time-consuming, difficult to operate, susceptible to human error, and lacks automatic digital display.
[0003] Therefore, we propose a device for measuring the density of concrete raw material admixture powder. Summary of the Invention
[0004] The purpose of this invention is to provide a device for measuring the density of concrete raw material admixture powder, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a concrete raw material admixture powder density measuring device, comprising an electronic scale, a water tank fixedly installed on the top of the electronic scale, a fixed bracket fixedly installed on the top of the water tank, a level gauge fixedly installed on the inner wall of the water tank, a connecting pipe fixedly installed on one side of the water tank, an electric push rod fixedly installed in the middle of the fixed bracket, a lifting plate fixedly installed at the movable end of the bottom of the electric push rod, a placement hopper integrally provided in the middle of the lifting plate, a downward pressure spring fixedly installed on both sides of the placement hopper at the bottom of the lifting plate, a connecting horizontal plate fixedly installed at the bottom of the downward pressure spring, a connecting column fixedly installed in the middle of the top of the connecting horizontal plate, a sealing head fixedly installed at the top of the connecting column inside the placement hopper, a water storage tank fixedly installed inside the electronic scale, a water pump provided on one side of the water storage tank, the other end of the connecting pipe fixedly installed with the water pump, and an electrically controlled valve provided at the connection between the connecting pipe and the water tank.
[0006] Optionally, the water pump inlet is connected to the interior of the water storage tank via a conduit, and the other end of the connecting pipe is fixedly installed to the water pump outlet.
[0007] Optionally, a drain outlet extending to the outside of the electronic scale is provided on one side of the water storage tank, and a valve is provided at the drain outlet of the water storage tank.
[0008] Optionally, four level gauges are fixedly installed on the inner wall of the water tank, and the four level gauges are respectively located on the four sides of the inner wall of the water tank.
[0009] Optionally, the connecting column is coaxial with the placement hopper, and the diameter of the connecting column is smaller than the diameter of the opening at the bottom of the placement hopper.
[0010] Optionally, the sealing head is made of rubber, and the bottom of the sealing head is abutted against the bottom of the placement hopper.
[0011] Optionally, the fixed bracket includes a vertical frame fixedly installed on both sides of the water tank, and a horizontal plate fixedly installed on the top of the vertical frame, wherein the electric push rod is fixedly installed through the horizontal plate.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This concrete raw material admixture powder density measuring device, through the setting of a lifting plate, first places the powder to be measured into the hopper and weighs it. Then, a certain amount of clean water is injected into the water tank, and the liquid level is recorded by the level gauge. Weighing is done again. After weighing, the electric control valve is opened to drain some of the water in the water tank into the storage tank. The electric control valve is closed, and the electric push rod pushes the lifting plate down, so that the connecting horizontal plate is pressed against the bottom of the water tank. This pushes the sealing head to separate from the opening at the bottom of the hopper, dissolving the powder into the water. The electric push rod then drives the lifting plate up again, and the water pump draws clean water from the storage tank, moving the liquid level in the water tank to the position recorded in the first weighing. The density value is directly displayed through real-time calculation by the built-in chip in the electronic scale. This device overcomes the harsh temperature conditions, complex operation, and errors caused by human readings in the commonly used laboratory Leybold flask, and has the advantages of accuracy and practicality. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a concrete raw material admixture powder density measuring device according to the present invention.
[0015] Figure 2 This is a schematic diagram of the water tank structure of the concrete raw material admixture powder density measuring device of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of an electronic scale for measuring the density of concrete raw material admixture powder according to this utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the fixed support for a concrete raw material admixture powder density measuring device according to the present invention.
[0018] In the diagram: 1. Electronic scale; 2. Water tank; 3. Fixed bracket; 4. Electric push rod; 5. Lifting plate; 6. Placement hopper; 7. Downward pressure spring; 8. Connecting horizontal plate; 9. Connecting column; 10. Sealing head; 11. Liquid level gauge; 12. Connecting pipe; 13. Electric control valve; 14. Water storage tank; 15. Water pump. Detailed Implementation
[0019] 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.
[0020] Please see Figures 1 to 4 This utility model provides a device for measuring the density of concrete raw material admixture powder, including an electronic scale 1, a water tank 2 fixedly installed on the top of the electronic scale 1, a fixed bracket 3 fixedly installed on the top of the water tank 2, a level gauge 11 fixedly installed on the inner wall of the water tank 2, a connecting pipe 12 fixedly installed on one side of the water tank 2, an electric push rod 4 fixedly installed in the middle of the fixed bracket 3, a lifting plate 5 fixedly installed at the movable end of the bottom of the electric push rod 4, a placement hopper 6 integrally provided in the middle of the lifting plate 5, a downward pressure spring 7 fixedly installed on both sides of the placement hopper 6 at the bottom of the lifting plate 5, a connecting horizontal plate 8 fixedly installed at the bottom of the downward pressure spring 7, a connecting column 9 fixedly installed in the middle of the top of the connecting horizontal plate 8, a sealing head 10 fixedly installed at the top of the connecting column 9 inside the placement hopper 6, a water storage tank 14 fixedly installed inside the electronic scale 1, a water pump 15 provided on one side of the water storage tank 14, and the other end of the connecting pipe 12 fixedly installed to the water pump 15. An electrically controlled valve 13 is installed at the connection between the electronic scale 2 and the water tank 2. By setting up a lifting plate 5, the powder to be measured is first placed in the container 6 and weighed. Then, a certain amount of clean water is injected into the water tank 2, and the liquid level is recorded by the level gauge 11. Weighing is done again. After weighing, the electrically controlled valve 13 is opened to drain some of the water in the water tank 2 into the water storage tank 14. The electrically controlled valve 13 is closed, and the electric push rod 4 pushes the lifting plate 5 down, so that the connecting horizontal plate 8 is pressed against the bottom of the water tank 2. This pushes the sealing head 10 to separate from the opening at the bottom of the container 6, dissolving the powder in the water. The electric push rod 4 then drives the lifting plate 5 up, and the water pump 15 draws clean water from the water storage tank 14 to move the liquid level in the water tank 2 to the position recorded for the first time and weigh it. The density value is directly displayed by the real-time calculation of the built-in chip in the electronic scale 1. This overcomes the harsh temperature conditions, complex operation, and errors caused by human readings in the commonly used Leybold flasks in the laboratory, and has accuracy and practicality.
[0021] The inlet of the water pump 15 is connected to the interior of the water storage tank 14 through a conduit. The other end of the connecting pipe 12 is fixedly installed with the outlet of the water pump 15. A drain outlet extending to the outside of the electronic scale 1 is provided on one side of the water storage tank 14. A valve is provided at the drain outlet of the water storage tank 14. Four level gauges 11 are fixedly installed on the inner wall of the water tank 2. The four level gauges 11 are located on the four sides of the inner wall of the water tank 2. The connecting column 9 is coaxially arranged with the placement hopper 6. The diameter of the connecting column 9 is smaller than the diameter of the opening at the bottom of the placement hopper 6. The sealing head 10 is made of rubber. The bottom of the sealing head 10 is pressed against the bottom of the interior of the placement hopper 6. The fixed bracket 3 includes a vertical frame fixedly installed on both sides of the water tank 2 and a horizontal plate fixedly installed on the top of the vertical frame. The electric push rod 4 is fixedly installed through the horizontal plate.
[0022] Working principle:
[0023] First, the powder to be measured is placed in the container 6 and weighed. Then, a certain amount of clean water is injected into the water tank 2, and the liquid level is recorded by the level gauge 11. Weighing is performed again. After weighing, the electric control valve 13 is opened to drain some of the water in the water tank 2 into the water storage tank 14. The electric control valve 13 is then closed, and the electric push rod 4 pushes the lifting plate 5 down, so that the connecting horizontal plate 8 is pressed against the bottom of the water tank 2. This pushes the sealing head 10 to separate from the opening at the bottom of the container 6, dissolving the powder in the water. The electric push rod 4 then drives the lifting plate 5 up, and the water pump 15 draws clean water from the water storage tank 14, moving the liquid level in the water tank 2 to the position recorded in the first weighing. The density value is then directly displayed through real-time calculation by the built-in chip in the electronic scale 1.
[0024] 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 device for measuring the density of concrete raw material admixture powder, comprising an electronic scale (1), characterized in that, A water tank (2) is fixedly installed on the top of the electronic scale (1). A fixed bracket (3) is fixedly installed on the top of the water tank (2). A level gauge (11) is fixedly installed on the inner wall of the water tank (2). A connecting pipe (12) is fixedly installed on one side of the water tank (2). An electric push rod (4) is fixedly installed in the middle of the fixed bracket (3). A lifting plate (5) is fixedly installed at the movable end of the bottom of the electric push rod (4). A placement hopper (6) is integrally provided in the middle of the lifting plate (5). Lower supports located on both sides of the placement hopper (6) are fixedly installed at the bottom of the lifting plate (5). A compression spring (7) is fixedly installed at the bottom of the compression spring (7), a connecting horizontal plate (8) is fixedly installed at the middle of the top of the connecting horizontal plate (8), a connecting column (9) is fixedly installed at the top of the connecting column (9), a sealing head (10) located inside the placement hopper (6) is fixedly installed at the top of the electronic scale (1), a water storage tank (14) is fixedly installed inside the electronic scale (1), a water pump (15) is provided on one side of the water storage tank (14), the other end of the connecting pipe (12) is fixedly installed with the water pump (15), and an electric control valve (13) is provided at the connection between the connecting pipe (12) and the water tank (2).
2. The concrete raw material admixture powder density measuring device according to claim 1, characterized in that, The inlet of the water pump (15) is connected to the interior of the water storage tank (14) through a conduit, and the other end of the connecting pipe (12) is fixedly installed to the outlet of the water pump (15).
3. The concrete raw material admixture powder density measuring device according to claim 1, characterized in that, The water storage tank (14) has a drain outlet on one side that extends to the outside of the electronic scale (1), and the drain outlet of the water storage tank (14) is equipped with a valve.
4. The concrete raw material admixture powder density measuring device according to claim 1, characterized in that, Four level gauges (11) are fixedly installed on the inner wall of the water tank (2), and the four level gauges (11) are located on the four sides of the inner wall of the water tank (2).
5. The concrete raw material admixture powder density measuring device according to claim 1, characterized in that, The connecting column (9) is coaxially arranged with the placement bucket (6), and the diameter of the connecting column (9) is smaller than the diameter of the opening at the bottom of the placement bucket (6).
6. The concrete raw material admixture powder density measuring device according to claim 1, characterized in that, The sealing head (10) is made of rubber, and the bottom of the sealing head (10) is set to abut against the bottom of the inside of the placement hopper (6).
7. The concrete raw material admixture powder density measuring device according to claim 1, characterized in that, The fixed bracket (3) includes a vertical frame fixedly installed on both sides of the water tank (2) and a horizontal plate fixedly installed on the top of the vertical frame. The electric push rod (4) is fixedly installed through the horizontal plate.