Efficient pre-mixer for raw materials of concrete production

Abstract

This utility model discloses a high-efficiency premixer for concrete production raw materials, including a pre-filter box. A pre-mixing box is fixedly installed at the bottom of the pre-filter box. A discharge pipe at the bottom of the pre-filter box extends into the interior of the pre-mixing box. A top cover plate is provided at the top of the pre-filter box. An internal frame is provided near the top of the pre-filter box. A coarse filter screen and a fine filter screen are fixedly installed near the top and bottom of the internal frame, respectively. This high-efficiency premixer for concrete production raw materials achieves rapid assembly and disassembly between the top cover plate and the pre-filter box by designing a quick-connect structure for the slot and the plate, as well as a quick-fixing device composed of an outer support plate, a movable slot, a movable block, a movable rod, a pull plate, and a limit spring. Operators only need to pull the pull plate to achieve the engagement and disassembly of the fixed plate and the fixed slot, without the need to use tools to disassemble the bolts one by one, which greatly improves the efficiency of assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of premixing technology, specifically to a high-efficiency premixing machine for concrete production raw materials. Background Technology

[0002] In the concrete production industry, efficient pre-mixing of raw materials is a key link to ensure stable concrete quality and improve production efficiency.

[0003] The top cover of existing premixers is usually fixed to the pre-filter box by bolts or welding. While this design ensures the stability of the structure to a certain extent, it brings great inconvenience when cleaning or replacing the filter screen. Operators need to use tools to remove the bolts one by one, which is not only time-consuming and laborious, but also increases the complexity of operation and reduces work efficiency. Especially when the production line is operating continuously and time is tight, this inefficient disassembly and assembly method is undoubtedly a major constraint on the production progress. Utility Model Content

[0004] The purpose of this utility model is to provide a high-efficiency premixer for concrete production raw materials, in order to solve the problem mentioned in the background art that the top cover of the existing premixers is usually fixed to the pre-filter box by bolts or welding. Although this design ensures the stability of the structure to a certain extent, it brings great inconvenience when cleaning or replacing the filter screen. Operators need to use tools to disassemble the bolts one by one, which is not only time-consuming and laborious, but also increases the complexity of operation and reduces work efficiency. Especially when the production line is operating continuously and time is tight, this inefficient disassembly and assembly method is undoubtedly a major constraint on the production progress.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency premixer for concrete production raw materials, comprising a pre-filter box, a pre-mixing box fixedly installed at the bottom of the pre-filter box, a discharge pipe extending from the bottom of the pre-filter box into the interior of the pre-mixing box, a top cover plate provided at the top of the pre-filter box, an internal frame provided near the top of the pre-filter box, a coarse filter screen and a fine filter screen fixedly installed near the top and bottom of the internal frame respectively, slots provided on both sides of the top of the pre-filter box, clamping plates fixedly connected to both sides of the top cover plate, external support plates fixedly connected to both sides of the bottom of the top cover plate, a fixing plate provided near the bottom of one side of the external support plate, and fixing grooves provided near the top of both sides of the pre-filter box and near the bottom of the clamping plates.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This high-efficiency premixer for concrete production utilizes a quick-connect structure for the slots and plates, along with a rapid fixing device consisting of an outer support plate, movable slot, movable block, movable rod, pull plate, and limit spring. This allows for rapid assembly and disassembly between the top cover and the pre-filter box. Operators can easily engage and disassemble the fixing plate and the fixing slot by simply pulling the pull plate, eliminating the need to disassemble bolts one by one with tools. This significantly improves assembly and disassembly efficiency and reduces manual labor intensity. The convenient and quick assembly and disassembly of the top cover allows operators to more easily remove it for thorough cleaning and maintenance of the pre-filter box, especially the coarse and fine filters. The sealing strip design ensures the pre-filter box's airtightness during assembly and disassembly, preventing material leakage and further simplifying the cleaning and maintenance process. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This utility model Figure 1 A magnified view of part A in the diagram;

[0010] Figure 3 This is a three-dimensional view of the built-in frame of this utility model;

[0011] Figure 4 This is a three-dimensional view of the structure of the outer support plate of this utility model.

[0012] In the diagram: 1. Pre-filter box; 2. Pre-mixing box; 3. Support leg; 4. Variable frequency motor; 5. Rotating rod; 6. Mixing blade; 7. Discharge pipe; 8. Top cover plate; 9. Feed pipe; 10. Internal frame; 11. Coarse filter screen; 12. Fine filter screen; 13. Positioning groove; 14. Inner support plate; 15. Positioning block; 16. Slot; 17. Slot plate; 18. Sealing strip; 19. Fixed groove; 20. Movable groove; 21. Movable block; 22. Movable rod; 23. Limiting spring; 24. Pull plate; 25. Outer support plate; 26. Fixed plate. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1-4This utility model provides a technical solution: a high-efficiency premixer for concrete production raw materials, including a pre-filter box 1, a pre-mixing box 2 fixedly installed at the bottom of the pre-filter box 1, a discharge pipe opened at the bottom of the pre-filter box 1 extending into the interior of the pre-mixing box 2, a top cover plate 8 provided at the top of the pre-filter box 1, an internal frame 10 provided at the top position inside the pre-filter box 1, a coarse filter screen 11 and a fine filter screen 12 fixedly installed at the top and bottom positions of the internal frame 10 respectively, slots 16 are opened on both sides of the top of the pre-filter box 1, a clamping plate 17 is fixedly connected to both sides of the top cover plate 8, an outer support plate 25 is fixedly connected to both sides of the bottom of the top cover plate 8, a fixing plate 26 is provided at the bottom position on one side of the outer support plate 25, and fixing grooves 19 are opened at the top positions on both sides of the pre-filter box 1 and at the bottom positions of the clamping plate 17.

[0015] A variable frequency motor 4 is fixedly installed at the center of the bottom of the premixing tank 2. The output end of the variable frequency motor 4 extends into the interior of the premixing tank 2 and is fixedly connected to a rotating rod 5. Several mixing blades 6 are fixedly installed on the surface of the rotating rod 5. The mixing speed can be adjusted as needed to improve mixing efficiency, reduce energy consumption, extend equipment service life, and ensure that concrete raw materials are mixed evenly to improve concrete quality.

[0016] The bottom of the premixing tank 2 is connected to the discharge pipes 7 on both sides, which facilitates the quick and even discharge of the mixed concrete raw materials. The bottom of both sides of the premixing tank 2 is fixedly connected to the support legs 3.

[0017] The top cover plate 8 is connected to the feed pipe 9 near the center.

[0018] Positioning grooves 13 are provided on both sides of the top of the coarse filter screen 11. Inner support plates 14 are fixedly connected to both sides of the bottom inner side of the top cover plate 8. The bottom of the inner support plate 14 extends through the interior of the built-in frame 10 and contacts the inner wall of the built-in frame 10. Positioning blocks 15 are fixedly connected to the bottom of the inner support plate 14. The bottom of the positioning blocks 15 extends through the interior of the positioning grooves 13 and engages with the positioning grooves 13. This can limit the position of the built-in frame (10) and support the top cover plate 8.

[0019] The top of both sides of the built-in frame 10 is designed in a U-shape, and the two sides of the top of the built-in frame 10 are snapped into the center position of the top two sides of the pre-filter box 1.

[0020] The bottom of the card plate 17 extends into the inside of the card slot 16 and engages with the card slot 16. Both sides of the card plate 17 are fixedly connected to the bottom of the top cover plate 8. The bottom of the sealing strip 18 contacts the top of the pre-filter box 1, making the installation and removal of the top cover plate 8 convenient and quick, and facilitating the cleaning and maintenance of the inside of the pre-filter box 1.

[0021] A movable groove 20 is provided at the bottom of the outer support plate 25. A movable block 21 is slidably connected to one side of the movable groove 20. One side of the fixed plate 26 extends into the interior of the movable groove 20 and is fixedly connected to one side of the movable block 21. A movable rod 22 is fixedly connected to the other side of the movable block 21. The side of the movable rod 22 away from the movable block 21 extends into the exterior of the outer support plate 25 and is fixedly connected to a pull plate 24. The other side of the fixed plate 26 extends through the outer side of the top of the inner frame 10 and the fixed groove 19 and is engaged with the fixed groove 19. A limiting spring 23 is sleeved on the surface of the movable rod 22. The two sides of the limiting spring 23 are fixedly connected to the inner wall of the movable groove 20 and the other side of the movable block 21, respectively. By pulling the pull plate 24, the fixed plate 26 and the fixed groove 19 can be quickly engaged and disengaged, which greatly simplifies the fixing and disassembly process between the top cover plate 8 and the pre-filter box 1, improves operating efficiency, and reduces manual labor intensity.

[0022] Working principle: Concrete production raw materials enter the pre-filter box 1 through the feed pipe 9. The raw materials first encounter the coarse filter screen 11, where larger impurities and particles are intercepted. Only smaller particles of raw materials continue to pass through the coarse filter screen 11. Subsequently, the raw materials that have undergone preliminary filtration enter the fine filter screen 12 area. The fine filter screen 12 further removes even finer impurities, ensuring the purity of the raw materials entering the pre-mixing box 2. The filtered concrete raw materials enter the pre-mixing box 2 through the discharge pipe. The variable frequency motor 4 starts, and its output end drives the rotating rod 5 to rotate. The mixing blades 6 on the surface of the rotating rod 5 rotate accordingly, performing efficient mixing of the concrete raw materials. By adjusting the speed of the variable frequency motor 4, the mixing speed can be controlled as needed to achieve the best mixing effect, improve mixing efficiency and reduce energy consumption. After the concrete raw materials are fully mixed in the pre-mixing box 2, the mixed concrete is quickly and evenly discharged through the discharge pipe 7 at the bottom of the pre-mixing box 2 for subsequent production. When disassembling the top cover plate 8, pull the pull plate 24 to move the movable rod 22, which in turn pushes the movable block 21 to slide in the movable groove 20. The movement of the movable block 21 causes the fixed plate 26 to separate from the fixed groove 19. Then, gently lift the top cover plate 8 to make the clamping plate 17 disengage from the clamping groove 16, thus completing the disassembly.

[0023] In summary, this high-efficiency premixer for concrete production raw materials, through its design of a quick-connect structure between the slot 16 and the plate 17, and a quick-fixing device composed of the outer support plate 25, movable groove 20, movable block 21, movable rod 22, pull plate 24, and limit spring 23, achieves rapid disassembly and assembly between the top cover plate 8 and the pre-filter box 1. Operators only need to simply pull the pull plate 24 to achieve the engagement and disassembly of the fixing plate 26 and the fixing groove 19, without the need to use tools to disassemble the bolts one by one, which greatly improves the efficiency of disassembly and assembly and reduces the intensity of manual labor. Because the disassembly and assembly of the top cover plate 8 is convenient and quick, operators can more easily remove the cover plate to thoroughly clean and maintain the interior of the pre-filter box 1, especially the coarse filter screen 11 and the fine filter screen 12. The design of the sealing strip 18 ensures the sealing of the pre-filter box 1 during disassembly and assembly, prevents material leakage, and further simplifies the cleaning and maintenance process.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0025] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0026] 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 high-efficiency premixer for concrete production raw materials, comprising a pre-filter box (1), characterized in that: The bottom of the pre-filter box (1) is fixedly installed with a pre-mixing box (2). The discharge pipe at the bottom of the pre-filter box (1) extends into the interior of the pre-mixing box (2). The top of the pre-filter box (1) is provided with a top cover plate (8). An internal frame (10) is provided near the top of the pre-filter box (1). A coarse filter screen (11) and a fine filter screen (12) are fixedly installed near the top and bottom of the internal frame (10), respectively. Slots (16) are provided on both sides of the top of the pre-filter box (1). A card plate (17) is fixedly connected to both sides of the top cover plate (8). An external support plate (25) is fixedly connected to both sides of the bottom of the top cover plate (8). A fixing plate (26) is provided near the bottom of one side of the external support plate (25). Fixing slots (19) are provided near the top of both sides of the pre-filter box (1) and near the bottom of the card plate (17).

2. The high-efficiency premixer for concrete production raw materials according to claim 1, characterized in that: A variable frequency motor (4) is fixedly installed at the center of the bottom of the pre-mixing tank (2). The output end of the variable frequency motor (4) extends through the interior of the pre-mixing tank (2) and is fixedly connected to a rotating rod (5). Several stirring blades (6) are fixedly installed on the surface of the rotating rod (5).

3. The high-efficiency premixer for concrete production raw materials according to claim 1, characterized in that: The pre-mixing tank (2) has discharge pipes (7) connected to both sides of its bottom, and support legs (3) are fixedly connected to both sides of its bottom.

4. The high-efficiency premixer for concrete production raw materials according to claim 1, characterized in that: The top cover plate (8) is connected to the feed pipe (9) near the center.

5. The high-efficiency premixer for concrete production raw materials according to claim 1, characterized in that: The coarse filter screen (11) has positioning grooves (13) on both sides of its top. The top cover plate (8) has inner support plates (14) fixedly connected to both sides of its bottom inner side. The bottom of the inner support plate (14) extends through the interior of the built-in frame (10) and contacts the inner wall of the built-in frame (10). The bottom of the inner support plate (14) is fixedly connected to a positioning block (15). The bottom of the positioning block (15) extends through the interior of the positioning groove (13) and engages with the positioning groove (13).

6. The high-efficiency premixer for concrete production raw materials according to claim 1, characterized in that: The top of both sides of the built-in frame (10) is designed in a U-shape, and the two sides of the top of the built-in frame (10) are engaged with the center position of the top two sides of the pre-filter box (1).

7. The high-efficiency premixer for concrete production raw materials according to claim 1, characterized in that: The bottom of the card plate (17) extends into the inside of the card slot (16) and engages with the card slot (16). Both sides of the card plate (17) are fixedly connected to the bottom of the top cover plate (8). The bottom of the sealing strip (18) contacts the top of the pre-filter box (1).

8. The high-efficiency premixer for concrete production raw materials according to claim 1, characterized in that: A movable groove (20) is provided at the bottom of the outer support plate (25). A movable block (21) is slidably connected to one side of the movable groove (20). One side of the fixed plate (26) extends into the interior of the movable groove (20) and is fixedly connected to one side of the movable block (21). A movable rod (22) is fixedly connected to the other side of the movable block (21). The side of the movable rod (22) away from the movable block (21) extends into the exterior of the outer support plate (25) and is fixedly connected to a pull plate (24). The other side of the fixed plate (26) extends sequentially through the outer side of the top of the inner frame (10) and the fixed groove (19) and is engaged with the fixed groove (19). A limiting spring (23) is sleeved on the surface of the movable rod (22). The two sides of the limiting spring (23) are fixedly connected to the inner wall of the movable groove (20) and the other side of the movable block (21), respectively.

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