Foamed light soil wet density flow change rate tester
By designing a flow rate measuring instrument for wet density of foamed lightweight soil, and adopting an automated conveying and circulation design, the pumping and diffusion of foamed lightweight soil during construction were simulated. This solved the problem of foam floating on the surface and slurry sinking to the bottom during construction, and achieved accuracy in construction quality control and consistency in measurement results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG XINTANG SONG NEW TECHNOLOGY CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-26
AI Technical Summary
Existing technologies lack effective means to simulate the phenomenon of foam floating on the surface and slurry sinking to the bottom during the construction of foamed lightweight soil, which makes it difficult to control the construction quality, and manual operation leads to large differences in measurement results.
The instrument for measuring the flow change rate of wet density of foamed lightweight soil is designed, including a slurry cylinder, a hose pump, a discharge pan, and a support pipe. It adopts an automated conveying and circulation design to simulate the pumping and diffusion of foamed lightweight soil during construction. In particular, the design of the reflux gap between the discharge pan and the slurry cylinder reduces manual intervention.
Provide more accurate construction quality control data, ensure the consistency and accuracy of measurement results, and reduce the differences in measurement results caused by operators.
Smart Images
Figure CN224286607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building technology, and in particular to a measuring instrument for the flow change rate of wet density of foamed lightweight soil. Background Technology
[0002] Foamed lightweight soil is a new type of lightweight material. It is formed by mixing prepared foam with cementitious materials, water, and optional components in a certain proportion, and then hardening it through physicochemical processes. It features light weight, good fluidity, good thermal insulation, and upright stability, and has been widely used in transportation construction and building insulation. Depending on the foaming method, foamed lightweight soil can be divided into chemically foamed and physically foamed types. Physical foaming involves injecting compressed air into an aqueous solution of a physical foaming agent using a foaming machine to produce a large amount of uniform and stable foam. This process does not generate new substances. Then, cement-based slurry is uniformly mixed with the foam, creating numerous pores within the cement product. This method is widely used in cast-in-place foamed lightweight soil applications.
[0003] However, physically foamed foam is a bilayer water film, a structure that is easily broken and defoamed when exposed to external influences. Existing standards, such as the "Technical Specification for Foamed Lightweight Soil Filling Engineering" (CJJ / T177-2012) and the "Technical Specification for Cast-in-Place Foamed Lightweight Soil" (CECS249:2008), use manual stirring to test wet density changes. This method yields significant differences between operators and only reflects the compatibility between the foam and the raw materials. In actual cast-in-place construction, after the foamed lightweight soil is pumped, the foam sometimes floats on the surface while the slurry sinks to the bottom as it spreads. This phenomenon is due to both poor compatibility between the foaming agent and the raw materials, and improper construction. Currently, there is a lack of effective methods to simulate this phenomenon; problems can only be identified during construction, which poses significant challenges to construction quality control. Utility Model Content
[0004] The purpose of this invention is to provide a flow change rate tester for foamed lightweight soil wet density, which can effectively simulate the phenomenon that foamed lightweight soil may exhibit during construction, where foam floats on the surface and slurry sinks to the bottom, thereby providing more accurate data support for construction quality control.
[0005] In a first aspect, this utility model provides an instrument for measuring the flow change rate of wet density of foamed lightweight soil, comprising:
[0006] The slurry cylinder is provided with a receiving cavity, a first pipeline interface, and a second pipeline interface, the first pipeline interface and the second pipeline interface being located at the bottom of the slurry cylinder;
[0007] A hose pump includes an inlet and an outlet, with an inlet pipe between the outlet and the first pipeline interface, and an outlet pipe between the inlet and the second pipeline interface;
[0008] The discharge plate and the support pipe are provided. One end of the support pipe is connected to the feed pipe through the first pipe interface, and the other end of the support pipe passes through the discharge plate. A reflux gap is reserved between the discharge plate and the slurry cylinder. The slurry output from the discharge port can be transported to the discharge plate in sequence through the feed pipe and the support pipe. The slurry on the discharge plate can also be returned to the suction port in sequence through the reflux gap, the second pipe interface and the discharge pipe.
[0009] This utility model provides a wet density and flow rate change tester for foamed lightweight soil. Through a uniquely designed slurry cylinder, hose pump, discharge pan, and support pipe, the instrument can simulate the pumping and diffusion process of foamed lightweight soil during actual construction. In particular, the reflux gap design between the discharge pan and the slurry cylinder effectively simulates the phenomenon that foamed lightweight soil may exhibit during construction, where foam floats on the surface and the slurry sinks to the bottom, thus providing more accurate data support for construction quality control. Furthermore, the instrument employs an automated conveying and circulating reflux design, reducing manual intervention and avoiding differences in measurement results caused by different operators. This design ensures the consistency and accuracy of each measurement, providing engineering technicians with reliable wet density and flow rate change data.
[0010] Furthermore, the bottom of the slurry cylinder is provided with a discharge port that communicates with the receiving cavity, and the discharge port can discharge the slurry in the receiving cavity to the outside.
[0011] By adopting the above technical solution, the slurry can be quickly discharged through the discharge port after each test, reducing the time for cleaning and preparing for the next test, thereby improving the testing efficiency.
[0012] Furthermore, the top of the slurry cylinder is provided with an opening that communicates with the receiving cavity, the opening being used to add slurry into the receiving cavity.
[0013] By employing the above technical solution, an opening is provided at the top of the slurry cylinder, allowing operators to directly pour the foamed lightweight soil slurry into the receiving cavity without the need for complex piping connections or other auxiliary equipment. This design greatly simplifies the slurry addition process and improves operational convenience and efficiency.
[0014] Furthermore, the support tube can be vertically mounted on the feed tube.
[0015] Using the above technical solution, the amount of foamed lightweight soil slurry poured into the slurry cylinder may vary in actual operation. Through the design of the liftable support pipe, the operator can adjust the discharge plate to a position slightly higher than the slurry surface, based on the actual height of the slurry. This ensures that the slurry can flow out smoothly for testing, while preventing slurry overflow or blockage of the discharge plate.
[0016] Furthermore, the inner diameter of the support tube is adapted to the outer diameter of the feed tube so that the feed tube can be inserted into the support tube, and the support tube is provided with an internal thread end, the feed tube is provided with an external thread end, and the internal thread end can be threadedly connected to the external thread end.
[0017] By adopting the above technical solution, the connection between the support pipe and the feed pipe is more robust through the combination of internal and external threads, which can withstand the pressure and vibration generated during slurry transportation and ensure the stability of the equipment during operation.
[0018] Furthermore, the slurry cylinder is provided with a transparent observation window that extends from the bottom of the slurry cylinder toward the top of the slurry cylinder.
[0019] Using the above technical solution, the observation window extends from the bottom to the top of the slurry tank, allowing operators to comprehensively observe the condition of the foamed lightweight soil slurry in the vertical direction. This design not only allows observation of the overall distribution of the slurry but also provides a clear view of the slurry's state at different heights, such as the distribution of foam and the settling of the slurry.
[0020] Furthermore, it also includes a support frame, on which both the slurry cylinder and the hose pump are mounted.
[0021] By adopting the above technical solution and mounting the slurry cylinder and hose pump on the same support frame, the overall integrity of the equipment is significantly enhanced. This integrated design not only makes the equipment more compact but also facilitates transportation and installation.
[0022] Furthermore, it also includes a distribution box, which is equipped with a hose pump controller. The hose pump controller is electrically connected to the hose pump and is used to control the pumping speed of the hose pump.
[0023] Using the above technical solution, operators can precisely control the pumping speed of the hose pump through the hose pump controller. During the testing process, the pumping speed can be flexibly adjusted according to the characteristics of the foamed lightweight soil slurry and the testing requirements to ensure the accuracy and reliability of the test results.
[0024] Furthermore, the slurry cylinder is a cylindrical iron barrel, and the discharge plate is a disc.
[0025] Furthermore, the outer diameter of the slurry cylinder increases progressively from near the bottom to far from the bottom.
[0026] The inverted conical structure, employing the above technical solution, allows the slurry to pass more smoothly through the inlet and outlet pipes during recirculation. The larger upper outer diameter reduces resistance during recirculation, ensuring rapid and uniform recirculation. This structure reduces eddies and air bubbles during recirculation, resulting in more stable recirculation, improved recirculation efficiency, and reduced recirculation time.
[0027] As can be seen from the above, the foamed lightweight soil wet density flow rate measuring instrument provided by this utility model, through its uniquely designed slurry cylinder, hose pump, discharge pan, and support pipe, can simulate the pumping and diffusion process of foamed lightweight soil in actual construction. In particular, the reflux gap design between the discharge pan and the slurry cylinder effectively simulates the phenomenon that foamed lightweight soil may exhibit during construction, where foam floats on the surface and slurry sinks to the bottom, thus providing more accurate data support for construction quality control. Furthermore, the instrument adopts an automated conveying and circulating reflux design, reducing manual intervention and avoiding differences in measurement results caused by different operators. This design ensures the consistency and accuracy of each measurement, providing engineering technicians with reliable wet density and flow rate data.
[0028] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing embodiments of this application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of a foam lightweight soil wet density flow change rate measuring instrument proposed in this utility model.
[0030] Figure 2 This is a top view of the structure of a foam lightweight soil wet density flow change rate measuring instrument proposed in this utility model.
[0031] Figure 3 for Figure 1 A magnified schematic diagram of region A of the foamed lightweight soil wet density flow change rate measuring instrument.
[0032] In the attached diagram: 100, slurry cylinder; 110, receiving cavity; 120, first pipeline interface; 130, second pipeline interface; 140, discharge port; 150, opening; 160, observation window; 200, hose pump; 210, suction port; 220, discharge port; 300, feed pipe; 310, external thread end; 400, discharge pipe; 500, discharge plate; 600, support pipe; 610, internal thread end; 700, reflux gap; 800, support frame; 900, electrical control box. Detailed Implementation
[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0034] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.
[0035] This utility model discloses a wet density flow change rate tester for foamed lightweight soil, which is mainly used to measure the wet density flow change rate of foamed lightweight soil. The tester can effectively simulate the phenomenon that foamed lightweight soil may exhibit during construction, where foam floats on the surface and the slurry sinks to the bottom, thus providing more accurate data support for construction quality control.
[0036] Reference Appendix Figure 1In one embodiment, the foamed lightweight soil wet density flow change rate measuring instrument includes a slurry cylinder 100, a hose pump 200, a discharge plate 500, and a support pipe 600. The slurry cylinder 100 has a receiving cavity 110, a first pipe interface 120, and a second pipe interface 130, with the first and second pipe interfaces 120 located at the bottom of the slurry cylinder 100. The hose pump 200 includes a suction port 210 and a discharge port 220, with an inlet pipe 300 between the discharge port 220 and the first pipe interface 120, and a discharge pipe 400 between the suction port 210 and the second pipe interface 130. One end of the support pipe 600 passes through the first pipe... The inlet 120 is connected to the feed pipe 300, and the other end of the support pipe 600 passes through the discharge plate 500. A return gap 700 is reserved between the discharge plate 500 and the slurry cylinder 100. The slurry output from the outlet 220 can be transported to the discharge plate 500 in sequence through the feed pipe 300 and the support pipe 600. The slurry on the discharge plate 500 can also be returned to the suction port 210 in sequence through the return gap 700, the second pipeline inlet 130 and the discharge pipe 400.
[0037] Specifically, the hose pump 200 includes a three-phase asynchronous motor driving the pump and a pumping device. The three-phase asynchronous motor uses 220V voltage, a frequency of 50HZ, a power of 0.75KW, a speed of 1400R / min, an energy efficiency rating of 3, and weighs 10KG. The hose pumping device is model HXRB-20, with a diameter of 20mm, a flow rate of 300L / H, a pressure of 0.3MPa, a power of 0.75KW-4, and a speed of 40rpm.
[0038] As can be seen from the above, the foamed lightweight soil wet density flow rate measuring instrument provided by this utility model, through the unique design of the slurry cylinder 100, hose pump 200, discharge plate 500, and support pipe 600, can simulate the pumping and diffusion process of foamed lightweight soil in actual construction. In particular, the design of the reflux gap 700 between the discharge plate 500 and the slurry cylinder 100 can effectively simulate the phenomenon that foamed lightweight soil may float on the surface and slurry sinks to the bottom during construction, thus providing more accurate data support for construction quality control. In addition, the instrument adopts an automated conveying and circulating reflux design, reducing manual intervention and avoiding differences in measurement results caused by different operators. This design can ensure the consistency and accuracy of each measurement result, providing engineering technicians with reliable wet density and flow rate data.
[0039] In one embodiment, the top of the slurry cylinder 100 is also provided with an opening 150 communicating with the receiving cavity 110, the opening 150 being used to add slurry to the receiving cavity 110.
[0040] By adopting the above technical solution, an opening 150 is provided at the top of the slurry cylinder 100, allowing operators to directly pour the foamed lightweight soil slurry into the receiving cavity 110 without the need for complex pipe connections or other auxiliary equipment. This design greatly simplifies the slurry addition process and improves operational convenience and efficiency.
[0041] In one embodiment, the slurry tank 100 is provided with a transparent observation window 160, which extends from the bottom of the slurry tank 100 toward the top of the slurry tank 100.
[0042] Specifically, scale lines can be set on the observation window (not shown in the figure) to facilitate observation of the foamed lightweight soil slurry.
[0043] Using the above technical solution, the observation window 160 extends from the bottom to the top of the slurry tank 100, allowing operators to fully observe the condition of the foamed lightweight soil slurry in the vertical direction. This design not only allows observation of the overall distribution of the slurry but also provides a clear view of the slurry's state at different heights, such as the distribution of foam and the settling of the slurry.
[0044] In one embodiment, a support frame 800 is also included, and the slurry cylinder 100 and the hose pump 200 are all mounted on the support frame 800.
[0045] By adopting the above technical solution and mounting the slurry cylinder 100 and the hose pump 200 on the same support frame 800, the overall integrity of the equipment is significantly enhanced. This integrated design not only makes the equipment more compact but also facilitates transportation and installation.
[0046] In one embodiment, the slurry cylinder 100 is a cylindrical iron barrel, and the discharge plate 500 is a disc.
[0047] Specifically, the diameter and height of the slurry cylinder are both 500mm.
[0048] In one embodiment, the outer diameter of the slurry cylinder 100 increases from near the bottom to far from the bottom.
[0049] By adopting the above technical solution, the inverted conical structure allows the slurry to pass more smoothly through the inlet and outlet pipes 400 during the reflow process. The larger upper outer diameter reduces the resistance of the slurry during reflow, ensuring that the slurry can be reflowed quickly and evenly. This structure can reduce eddies and bubbles in the slurry during the reflow process, making the slurry reflow more stable, improving reflow efficiency, and reducing reflow time.
[0050] Reference Appendix Figure 2 In one embodiment, the bottom of the slurry cylinder 100 is also provided with a discharge port 140 that communicates with the receiving cavity 110, and the discharge port 140 can discharge the slurry in the receiving cavity 110 to the outside.
[0051] By adopting the above technical solution, the slurry can be quickly discharged through the discharge port 140 after each test, reducing the time for cleaning and preparing for the next test, thereby improving the testing efficiency.
[0052] In one embodiment, a distribution box 900 is also included, which is equipped with a hose pump controller. The hose pump controller is electrically connected to the hose pump 200 and is used to control the pumping speed of the hose pump 200.
[0053] Using the above technical solution, operators can precisely control the pumping speed of the hose pump 200 through the hose pump controller. During the testing process, the pumping speed can be flexibly adjusted according to the characteristics of the foamed lightweight soil slurry and the testing requirements to ensure the accuracy and reliability of the test results.
[0054] Reference Appendix Figure 3 In one embodiment, the support tube 600 is elliptical and movably mounted on the feed tube 300.
[0055] Using the above technical solution, the amount of foamed lightweight soil slurry poured into the slurry cylinder 100 may vary in actual operation. Through the design of the liftable support pipe 600, the operator can adjust the discharge plate 500 to a position slightly higher than the slurry surface, based on the actual height of the slurry. This ensures that the slurry can flow out smoothly for testing, while preventing slurry overflow or blockage of the discharge plate 500.
[0056] In one embodiment, the inner diameter of the support tube 600 is adapted to the outer diameter of the feed tube 300 so that the feed tube 300 can be inserted into the support tube 600, and the support tube 600 is provided with an internal thread end 610, and the feed tube 300 is provided with an external thread end 310, and the internal thread end 610 can be threadedly connected to the external thread end 310.
[0057] By adopting the above technical solution, the connection between the support pipe 600 and the feed pipe 300 is more robust through the cooperation of internal and external threads, which can withstand the pressure and vibration generated during slurry transportation and ensure the stability of the equipment during operation.
[0058] The working principle of the foam lightweight soil wet density flow change rate tester is as follows:
[0059] Pour in an appropriate amount of the prepared foamed lightweight soil slurry, adjust the discharge plate to be slightly higher than the slurry surface, connect the power supply, adjust the circulation pump speed, and start the power switch to circulate the foamed lightweight soil slurry. Test the wet density of the foamed lightweight soil after 0 minutes, 5 minutes, 10 minutes, 15 minutes, 20 minutes, 25 minutes, and 30 minutes of circulation. After the test is completed, turn off the power, open the discharge port to release the foamed lightweight soil from the cylinder, and rinse the cylinder with water.
[0060] The rate of change of wet density is calculated as (ρmax - ρ0) / ρ0, where ρmax is the maximum wet density at multiple test times and ρ0 is the wet density at test time 0.
[0061] The test data for the rate of change of wet density during flow are shown in the table below:
[0062] Shaogang desulfurization ash - ordinary foaming agent CFB Ash - Common Foaming Agent Raw ash - ordinary foaming agent Shaogang desulfurization ash - ultra-stable foaming agent Pure cement - ordinary foaming agent Test time / min wet density wet density wet density wet density wet density 0 682 710 723 681 617 5 692 771 742 674 623 10 700 738 750 681 615 15 716 810 761 656 609 20 733 865 779 677 613 25 776 863 776 683 619 30 782 886 784 686 609 Wet density change rate / % 14.7 24.8 8.4 0.7 0.3
[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0064] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. An instrument for measuring the flow change rate of wet density of foamed lightweight soil, characterized in that, include: The slurry cylinder (100) is provided with a receiving cavity (110), a first pipeline interface (120), and a second pipeline interface (130), wherein the first pipeline interface (120) and the second pipeline interface (130) are located at the bottom of the slurry cylinder (100); The hose pump (200) includes a suction port (210) and a discharge port (220). A feed pipe (300) is provided between the discharge port (220) and the first pipeline interface (120), and a discharge pipe (400) is provided between the suction port (210) and the second pipeline interface (130). The discharge plate (500) and the support pipe (600) are provided. One end of the support pipe (600) is connected to the feed pipe (300) through the first pipeline interface (120), and the other end of the support pipe (600) passes through the discharge plate (500). A return gap (700) is reserved between the discharge plate (500) and the slurry cylinder (100). The slurry output from the outlet (220) can be transported to the discharge plate (500) in sequence through the feed pipe (300) and the support pipe (600). The slurry on the discharge plate (500) can also be returned to the suction port (210) in sequence through the return gap (700), the second pipeline interface (130) and the discharge pipe (400).
2. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 1, characterized in that, The bottom of the slurry cylinder (100) is also provided with a discharge port (140) that communicates with the receiving cavity (110), and the discharge port (140) can discharge the slurry in the receiving cavity (110) to the outside.
3. The foam lightweight soil wet density flow change rate measuring instrument according to claim 1 or 2, characterized in that, The top of the slurry cylinder (100) is also provided with an opening (150) that communicates with the receiving cavity (110), and the opening (150) is used to add slurry to the receiving cavity (110).
4. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 1, characterized in that, The support tube (600) can be raised and lowered on the feed tube (300).
5. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 4, characterized in that, The inner diameter of the support tube (600) is adapted to the outer diameter of the feed tube (300) so that the feed tube (300) can be inserted into the support tube (600). The support tube (600) is provided with an internal thread end (610) and the feed tube (300) is provided with an external thread end (310). The internal thread end (610) can be threadedly connected to the external thread end (310).
6. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 1, characterized in that, The slurry tank (100) is provided with a transparent observation window (160), which extends from the bottom of the slurry tank (100) toward the top of the slurry tank (100).
7. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 1, characterized in that, It also includes a support frame (800), on which the slurry cylinder (100) and the hose pump (200) are both mounted.
8. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 1, characterized in that, It also includes a distribution box (900), which is equipped with a hose pump controller. The hose pump controller is electrically connected to the hose pump (200) and is used to control the pumping speed of the hose pump (200).
9. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 1, characterized in that, The slurry cylinder (100) is a cylindrical iron barrel, and the discharge plate (500) is a disc.
10. The foamed lightweight soil wet density flow change rate measuring instrument according to claim 1, characterized in that, The outer diameter of the slurry cylinder (100) increases from near the bottom to far from the bottom.