Concrete preparation, detection and sampling device for engineering management
By designing multi-stage mixing chambers and pull-out sampling valve plates inside the concrete silo, the problem of existing devices being unable to perform multi-stage sampling has been solved, enabling efficient and accurate detection of concrete quality and optimization of the mixing process.
Patent Information
- Application Number
- CN202422883230.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing concrete preparation testing and sampling devices can only perform testing at one sampling point, making it impossible to obtain samples at different mixing stages. This makes it difficult to detect and resolve concrete quality problems in a timely manner, especially when raw materials change, making it impossible to assess their impact.
A concrete tank with an internal cavity divided into a preliminary mixing chamber and a secondary mixing chamber was designed. It is equipped with a pull-out sampling valve plate and a sampling tube. Through the normally open discharge valve, normally closed valve section and sampling valve on the pull-out sampling valve plate, precise control and sample acquisition of different mixing stages can be achieved.
It enables precise sampling at different mixing stages, improves testing efficiency and accuracy, ensures comprehensive assessment of concrete quality, allows for timely detection and resolution of problems, and optimizes the mixing process.
Smart Images
Figure CN223485568U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of concrete testing technology, and in particular to a concrete preparation testing and sampling device for engineering management. Background Technology
[0002] In construction engineering management, concrete refers to a general term for engineering composite materials in which aggregates are bound together by cementing materials. The term "concrete" usually refers to cement concrete, also known as ordinary concrete, which is made by mixing cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion. It is widely used in civil engineering. During the concrete preparation process, testing devices are needed to monitor the quality of the concrete and determine its structural strength.
[0003] Traditional concrete preparation and testing sampling devices have shortcomings, which limit their effectiveness and efficiency in practical applications. In some applications, it is necessary to test the quality of concrete and admixtures at different mixing times. For example, changes in the source or specifications of raw materials used in concrete (such as cement, aggregates, water, and admixtures) may affect the mixing performance of the concrete. In such cases, it is necessary to reassess the impact of different mixing times on the performance of concrete and admixtures. However, existing sampling devices typically have only one sampling point and cannot obtain concrete samples at different mixing stages. This limits the assessment of concrete quality and makes it difficult to identify and resolve problems in a timely manner. Utility Model Content
[0004] The purpose of this invention is to provide a concrete preparation, testing, and sampling device for engineering management, in order 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 preparation, testing, and sampling device for engineering management, comprising:
[0006] The concrete hopper has an internal cavity divided into a primary mixing chamber and a secondary mixing chamber from top to bottom.
[0007] A pull-out sampling valve plate is inserted from the outer wall of the concrete tank to the upper part of the inner cavity of the secondary mixing chamber. The top surface of the pull-out sampling valve plate located in the secondary mixing chamber is sequentially provided with a normally open discharge valve port, a normally closed valve section and a sampling valve port.
[0008] The upper sampling tube has one end that passes through the secondary mixing chamber and is fixedly connected to the bottom of the sampling valve port, and the other end that extends through to the outside of the concrete hopper.
[0009] The lower sampling tube is connected at one end to the bottom of the secondary mixing chamber; it is used as a sampling tube for discharging materials in the secondary mixing process.
[0010] Both the preliminary mixing chamber and the secondary mixing chamber are equipped with a stirrer. The bottom of the inner cavity of the preliminary mixing chamber is provided with a first discharge port. The bottom end of the first discharge port slides and rubs against the top surface of the pull-out sampling valve plate and is alternately connected to the normally open discharge valve port, the normally closed valve section, and the sampling valve port.
[0011] In this preferred embodiment, positioning rods are symmetrically welded to the inner wall of the secondary mixing chamber and to both sides of the pull-out sampling valve plate, and two positioning blocks are symmetrically welded to the outer walls of both sides of the pull-out sampling valve plate.
[0012] In this preferred embodiment, the two positioning rods pass through two adjacent positioning blocks respectively, thereby achieving the positioning of the pull-out sampling valve plate.
[0013] In a preferred embodiment, the outer wall of one side of the pull-out sampling valve plate is provided with a first mark, a second mark, and a third mark at equal intervals. The first mark corresponds to the pull-out position of the normally open discharge valve port, the second mark corresponds to the pull-out position of the normally closed valve section, and the third mark corresponds to the pull-out position of the sampling valve port.
[0014] In a preferred embodiment, the mixer includes a first mixing component and a second mixing component, and the top of the concrete tank has a top cover.
[0015] In a preferred embodiment, the first stirring assembly includes a first stirring motor mounted on the top surface of the top cover, a first stirring shaft rotatably mounted on the bottom surface of the top cover, and a plurality of first stirring blades welded to the periphery of the first stirring shaft.
[0016] In a preferred embodiment, the second mixing assembly includes a second mixing motor fixedly installed on the lower part of the outer wall of the concrete tank, a second mixing shaft rotatably installed on the lower part of the chamber of the secondary mixing chamber, and a plurality of second mixing blades symmetrically welded to the periphery of the second mixing shaft.
[0017] In a preferred embodiment of this scheme, the bottom end of the secondary mixing chamber has a second discharge port, which is sealed to the lower sampling tube, and the lower part of the inner cavity of both the primary mixing chamber and the secondary mixing chamber has a funnel-shaped structure.
[0018] In a preferred embodiment, the upper part of the outer wall of the concrete tank is connected to a feed pipe, which extends into the preliminary mixing chamber, and multiple support legs are welded to the bottom of the concrete tank.
[0019] Compared with the prior art, the technical effects and advantages of this utility model are:
[0020] The concrete preparation, testing, and sampling device used in this project management has a concrete tank with a primary mixing chamber and a secondary mixing chamber from top to bottom. This multi-stage mixing design ensures that the concrete and admixtures are fully mixed at different stages, improving the uniformity and quality of the mixture.
[0021] The normally open discharge valve, normally closed valve section, and sampling valve on the pull-out sampling valve plate allow for precise control of concrete discharge and sampling operations, avoiding unnecessary waste and contamination. The upper sampling tube allows for rapid extraction of pre-mixed concrete samples from the primary mixing chamber, while the lower sampling tube allows for rapid extraction of secondary-mixed concrete samples from the secondary mixing chamber, significantly shortening sampling time and improving testing efficiency. The ability to obtain concrete samples at different mixing stages facilitates a comprehensive assessment of concrete quality, ensuring the accuracy and reliability of test results.
[0022] The design of different pull-out positions of the pull-out sampling valve plate ensures that the feeding and sampling operations of concrete and admixtures can be carried out smoothly at different stages, improving the convenience and efficiency of operation. Attached Figure Description
[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 It is a structural diagram of the utility model;
[0025] Figure 2 This is a schematic diagram of the disassembly structure of the first stirring shaft of this utility model;
[0026] Figure 3 This is a cross-sectional view of the concrete tank of this utility model;
[0027] Figure 4 This is a schematic diagram of the installation structure of the pull-out sampling valve plate of this utility model;
[0028] Figure 5 This is a schematic diagram of the disassembly structure of the upper sampling tube of this utility model.
[0029] Explanation of reference numerals in the attached figures:
[0030] In the diagram: 1. Concrete hopper; 2. Feed pipe; 3. Top cover; 4. First mixing motor; 5. Support leg; 6. Lower sampling pipe; 7. Second mixing motor; 8. Pull-out sampling valve plate; 9. First mixing shaft; 10. First mixing blade; 11. Support rod; 12. Preliminary mixing chamber; 13. Secondary mixing chamber; 14. Second mixing shaft; 15. Second mixing blade; 16. First discharge port; 17. Upper sampling pipe; 18. Second discharge port; 19. Hand notch; 20. Normally open discharge valve port; 21. Normally closed valve section; 22. Sampling valve port; 23. Positioning rod; 24. Positioning block; 25. First mark; 26. Second mark; 27. Third mark. Detailed Implementation
[0031] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.
[0032] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.
[0033] This embodiment provides, for example Figures 1 to 5 The concrete preparation and testing sampling device for engineering management shown includes: a concrete hopper 1, a pull-out sampling valve plate 8, an upper sampling tube 17, and a lower sampling tube 6.
[0034] In this embodiment, the inner cavity of the concrete tank 1 is divided into a primary mixing chamber 12 and a secondary mixing chamber 13 from top to bottom; a pull-out sampling valve plate 8 is inserted from the outer periphery of the concrete tank 1 to the upper part of the inner cavity of the secondary mixing chamber 13; the top surface of one end of the pull-out sampling valve plate 8 in the secondary mixing chamber 13 is sequentially provided with a normally open discharge valve port 20, a normally closed valve part 21, and a sampling valve port 22; one end of the upper sampling tube 17 passes through the secondary mixing chamber 13 and is fixedly connected to the bottom end of the sampling valve port 22, and the other end extends through to the outside of the concrete tank 1; one end of the lower sampling tube 6 is connected to the bottom end of the secondary mixing chamber 13; the sampling tube is used for secondary mixing discharge.
[0035] In this embodiment, both the preliminary mixing chamber 12 and the secondary mixing chamber 13 are equipped with a stirrer. The bottom of the inner cavity of the preliminary mixing chamber 12 is provided with a first discharge port 16. The bottom end of the first discharge port 16 slides and rubs against the top surface of the pull-out sampling valve plate 8 and is alternately connected to the normally open discharge valve port 20, the normally closed valve section 21 and the sampling valve port 22.
[0036] In this embodiment, the initial position of the pull-out sampling valve plate 8 is that the normally open discharge valve port 20 is aligned with the first discharge port 16, which facilitates the discharge of the pre-mixed concrete in the preliminary mixing chamber 12 into the secondary mixing chamber 13. When the pull-out sampling valve plate 8 is pulled so that the first discharge port 16 is aligned with the normally closed valve part 21, the first discharge port 16 can be closed, thereby preventing the concrete in the preliminary mixing chamber 12 from being discharged, which facilitates the mixing operation. When the pull-out sampling valve plate 8 is pulled again so that the first discharge port 16 is aligned with the sampling valve port 22, the pre-mixed concrete in the preliminary mixing chamber 12 can flow from the sampling valve port 22 into the upper sampling tube 17, and then be discharged from the upper sampling tube 17 to obtain a pre-mixed concrete sample in the preliminary mixing chamber 12. The valve inside the lower sampling tube 6 is opened, and the secondary-mixed concrete in the secondary mixing chamber 13 is discharged from the lower sampling tube 6 to obtain a secondary-mixed concrete sample, which helps to detect concrete in different mixing states. When the first discharge port 16 is alternately connected with the normally open discharge valve port 20, the normally closed valve section 21, and the sampling valve port 22, it can meet different usage requirements and improve its detection efficiency. This allows the pull-out sampling valve plate 8 to not only facilitate the discharge of pre-mixed concrete from the preliminary mixing chamber 12 into the secondary mixing chamber 13, but also to close the first discharge port 16 and perform sampling operations. The first discharge port 16 and the second discharge port 18 are located at the bottom of the preliminary mixing chamber 12 and the secondary mixing chamber 13, respectively, for discharging the mixed concrete. The former, through different positions in conjunction with the normally open discharge valve port 20, the normally closed valve section 21, and the sampling valve port 22, achieves different functional requirements.
[0037] In this embodiment, when the pull-out sampling valve plate 8 is in the initial position, the normally open discharge valve port 20 is aligned with the first discharge port 16. At this time, the concrete in the preliminary mixing chamber 12 can flow into the secondary mixing chamber 13 through the normally open discharge valve port 20, ensuring that the concrete after preliminary mixing can be smoothly transferred from the preliminary mixing chamber 12 to the secondary mixing chamber 13 for further mixing. This improves the continuity and efficiency of concrete mixing and ensures the smooth progress of the mixing process.
[0038] In this embodiment, when the pull-out sampling valve plate 8 is pulled to a certain position, the normally closed valve part 21 aligns with the first discharge port 16, at which point the first discharge port 16 is closed. This prevents the concrete in the preliminary mixing chamber 12 from continuing to flow out, thereby maintaining the amount of concrete in the preliminary mixing chamber 12 for longer mixing operations. Unnecessary concrete loss is avoided, ensuring that the concrete in the preliminary mixing chamber 12 achieves the ideal degree of mixing, thus improving the mixing quality.
[0039] In this embodiment, when the pull-out sampling valve plate 8 is further pulled, the sampling valve port 22 aligns with the first discharge port 16. At this time, the concrete in the preliminary mixing chamber 12 can flow into the upper sampling tube 17 through the sampling valve port 22. This allows the operator to take a portion of the mixed concrete sample from the preliminary mixing chamber 12 for quality testing and analysis. This provides a convenient and quick sampling method, ensuring the accuracy and reliability of the test results, helping to identify and solve problems in a timely manner, and optimizing the concrete mixing process.
[0040] In this embodiment, positioning rods 23 are symmetrically welded to the inner wall of the secondary mixing chamber 13 and to both sides of the pull-out sampling valve plate 8, and two positioning blocks 24 are symmetrically welded to the outer walls of both sides of the pull-out sampling valve plate 8.
[0041] In this embodiment, two positioning rods 23 pass through two adjacent positioning blocks 24 respectively, thereby achieving positioning of the pull-out sampling valve plate 8. A hand recess 19 is provided on the surface of the pull-out sampling valve plate 8 located outside the concrete tank 1.
[0042] In this embodiment, a first mark 25, a second mark 26, and a third mark 27 are sequentially and equidistantly arranged on one side of the outer wall of the pull-out sampling valve plate 8. The first mark 25 corresponds to the pull-out position of the normally open discharge valve port 20, the second mark 26 corresponds to the pull-out position of the normally closed valve section 21, and the third mark 27 corresponds to the pull-out position of the sampling valve port 22. The corresponding position is determined by observing that one of the first mark 25, the second mark 26, and the third mark 27 is aligned with the outer wall of the concrete tank 1. The first mark 25, the second mark 26, and the third mark 27 serve as reference points to help the operator confirm that the pull-out sampling valve plate 8 is in the correct position, ensuring the accuracy of the operation.
[0043] In this embodiment, when the material in the concrete tank 1 is heavy, the sampling valve plate 8 can be pulled out by an external device, such as using a hydraulic cylinder to pull out the sampling valve plate 8, so as to achieve the alternation of the positions of the normally open discharge valve port (20), the normally closed valve section (21), and the sampling valve port (22).
[0044] In this embodiment, the mixer includes a first mixing component and a second mixing component, and the top of the concrete tank 1 has a top cover 3.
[0045] In this embodiment, the first stirring assembly includes a first stirring motor 4 mounted on the top surface of the top cover 3, a first stirring shaft 9 rotatably mounted on the bottom surface of the top cover 3, and a plurality of first stirring blades 10 welded to the periphery of the first stirring shaft 9. A bearing seat is located at the middle of the support rod 11, and the bearing seat contains a sealed bearing that is interference-fitted with the bottom end of the first stirring shaft 9. Both ends of the support rod 11 are fixedly connected to the lower inner wall of the preliminary mixing chamber 12.
[0046] In this embodiment, the second mixing assembly includes a second mixing motor 7 fixedly installed on the lower part of the outer wall of the concrete tank 1, a second mixing shaft 14 rotatably installed on the lower part of the chamber of the secondary mixing chamber 13, and a plurality of second mixing blades 15 symmetrically welded to the periphery of the second mixing shaft 14. Both ends of the second mixing shaft 14 are connected to the inner wall of the secondary mixing chamber 13 through sealed bearings. The first mixing motor 4 and the second mixing motor 7 provide power to the primary mixing chamber 12 and the secondary mixing chamber 13, respectively. By driving the first mixing shaft 9 and the second mixing shaft 14 to rotate, the first mixing blades 10 and the second mixing blades 15 are driven to work, so as to achieve thorough mixing of the concrete.
[0047] In this embodiment, the bottom end of the secondary mixing chamber 13 has a second discharge port 18, which is sealed to the lower sampling tube 6. The lower part of the inner cavity of both the primary mixing chamber 12 and the secondary mixing chamber 13 has a funnel-shaped structure, which facilitates concrete discharge and sampling and reduces the risk of blockage. The lower sampling tube 6 and the upper sampling tube 17 are used to take concrete samples from the secondary mixing chamber 13 and the primary mixing chamber 12, respectively, for easy quality testing and analysis.
[0048] In this embodiment, a feed pipe 2 is connected to the upper part of the outer wall of the concrete tank 1, and the feed pipe 2 extends into the preliminary mixing chamber 12. Multiple support legs 5 are welded to the bottom of the concrete tank 1.
[0049] Working principle:
[0050] The concrete preparation and testing sampling device used in this project management is aligned with the normally closed valve section 21 of the pull-out sampling valve plate 8, thus sealing the first discharge port 16. Concrete raw materials and admixtures (powder or liquid) are then added to the preliminary mixing chamber 12 through the feed pipe 2. The first stirring motor 4, mounted on the top cover 3, is started, driving the first stirring shaft 9 to rotate and causing the first stirring blades 10 to stir the concrete raw materials and admixtures in the preliminary mixing chamber 12. During stirring, the sealed bearing in the support rod 11 ensures the stable rotation of the first stirring shaft 9. Stirring continues for a period of time to ensure the concrete in the preliminary mixing chamber 12 is uniformly mixed.
[0051] Pulling the pull-out sampling valve plate 8 to its initial position aligns the normally open discharge valve port 20 with the first discharge port 16. A portion of the pre-mixed concrete flows into the secondary mixing chamber 13 through the first discharge port 16 and the normally open discharge valve port 20. Pushing the pull-out sampling valve plate 8 aligns the normally closed valve section 21 with the first discharge port 16, sealing the first discharge port 16 and leaving the remaining pre-mixed concrete in the primary mixing chamber 12.
[0052] The second mixing motor 7, installed on the lower part of the outer wall of the concrete tank 1, is started, driving the second mixing shaft 14 to rotate, which in turn drives the second mixing blades 15 to mix the concrete and admixtures in the secondary mixing chamber 13. During the mixing process, the sealed bearing ensures the stable rotation of the second mixing shaft 14. Mixing is continued for a period of time to ensure that the concrete in the secondary mixing chamber 13 is mixed evenly.
[0053] When sampling begins, pull the pull-out sampling valve plate 8 so that the sampling valve port 22 on it is aligned with the first discharge port 16. At this time, the concrete in the preliminary mixing chamber 12 can flow into the upper sampling tube 17 through the sampling valve port 22 and be discharged from the upper sampling tube 17 to obtain a preliminary mixed concrete sample.
[0054] By observing the first mark 25, the second mark 26 and the third mark 27 on the pull-out sampling valve plate 8, ensure that the sampling valve port 22 is aligned with the first discharge port 16.
[0055] Open the valve inside the lower sampling tube 6, and the concrete admixture after secondary mixing in the secondary mixing chamber 13 will be discharged from the lower sampling tube 6 to obtain a sample of the concrete admixture after secondary mixing, thereby detecting whether the admixture is mixed evenly.
[0056] This process completes the initial and secondary mixing of concrete and samples of admixtures, which helps in the next step of the testing process.
[0057] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0058] 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 concrete preparation, testing, and sampling device for engineering management, characterized in that, include: The concrete hopper (1) has an inner cavity that is divided into a primary mixing chamber (12) and a secondary mixing chamber (13) from top to bottom. A pull-out sampling valve plate (8) is inserted from the outer periphery of the concrete tank (1) to the upper part of the inner cavity of the secondary mixing chamber (13). The pull-out sampling valve plate (8) is provided with a normally open discharge valve port (20), a normally closed valve part (21) and a sampling valve port (22) on the top surface of one end in the secondary mixing chamber (13). The upper sampling tube (17) has one end that passes through the secondary mixing chamber (13) and is fixedly connected to the bottom end of the sampling valve port (22), and the other end that extends through to the outside of the concrete tank (1). The lower sampling tube (6) is connected at one end to the bottom end of the secondary mixing chamber (13); it is used as a sampling tube for discharging material in the secondary mixing process. Both the preliminary mixing chamber (12) and the secondary mixing chamber (13) are equipped with a stirrer. The bottom of the inner cavity of the preliminary mixing chamber (12) is equipped with a first discharge port (16). The bottom end of the first discharge port (16) slides and rubs against the top surface of the pull-out sampling valve plate (8) and is alternately connected to the normally open discharge valve port (20), the normally closed valve section (21), and the sampling valve port (22).
2. The concrete preparation, testing, and sampling device for engineering management according to claim 1, characterized in that: Positioning rods (23) are symmetrically welded to the inner wall of the secondary mixing chamber (13) and to both sides of the pull-out sampling valve plate (8). Two positioning blocks (24) are symmetrically welded to the outer walls of both sides of the pull-out sampling valve plate (8).
3. The concrete preparation, testing, and sampling device for engineering management according to claim 2, characterized in that: The two positioning rods (23) pass through two adjacent positioning blocks (24) respectively, for positioning the pull-out sampling valve plate (8) by pulling it out.
4. The concrete preparation, testing, and sampling device for engineering management according to claim 3, characterized in that: The outer wall of one side of the pull-out sampling valve plate (8) is provided with a first mark (25), a second mark (26) and a third mark (27) at equal intervals. The first mark (25) corresponds to the pull-out position of the normally open feed valve port (20), the second mark (26) corresponds to the pull-out position of the normally closed valve part (21), and the third mark (27) corresponds to the pull-out position of the sampling valve port (22).
5. The concrete preparation, testing, and sampling device for engineering management according to claim 4, characterized in that: The mixer includes a first mixing component and a second mixing component, and the top of the concrete tank (1) has a top cover (3).
6. The concrete preparation, testing, and sampling device for engineering management according to claim 5, characterized in that: The first stirring assembly includes a first stirring motor (4) mounted on the top surface of the top cover (3), a first stirring shaft (9) rotatably mounted on the bottom surface of the top cover (3), and a plurality of first stirring blades (10) welded to the periphery of the first stirring shaft (9).
7. The concrete preparation, testing, and sampling device for engineering management according to claim 6, characterized in that: The second mixing assembly includes a second mixing motor (7) fixedly installed on the lower part of the outer wall of the concrete tank (1), a second mixing shaft (14) rotatably installed on the lower part of the chamber of the secondary mixing chamber (13), and a plurality of second mixing blades (15) symmetrically welded to the periphery of the second mixing shaft (14).
8. The concrete preparation, testing, and sampling device for engineering management according to claim 7, characterized in that: The bottom end of the secondary mixing chamber (13) has a second discharge port (18), which is sealed to the lower sampling tube (6). The lower part of the inner cavity of the primary mixing chamber (12) and the secondary mixing chamber (13) are both funnel-shaped structures.
9. A concrete preparation, testing, and sampling device for engineering management according to claim 8, characterized in that: The upper part of the outer wall of the concrete tank (1) is connected to a feed pipe (2), which extends into the preliminary mixing chamber (12).