A multiple mineral admixture concrete mixing device
By incorporating a perforated plate and a crushing tip into the concrete mixing device, the problem of clumping of powdered admixtures was solved, resulting in more uniform mixing and improved concrete quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAINAN UNITED UNIVERSITY
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-26
AI Technical Summary
During the concrete mixing process, powdered admixtures such as mineral powder and silica fume are prone to clumping due to moisture, resulting in uneven mixing and affecting the performance of the concrete.
A concrete mixing device with compound mineral admixtures was designed, which includes a perforated plate and a crushing tip in the pretreatment box. The up-and-down vibration of the perforated plate and the impact of the crushing tip break up the clumps of powdery raw materials. The up-and-down reciprocating motion of the agitator increases the mixing space and achieves deeper mixing.
This improved the mixing uniformity and quality of powdered raw materials, ensuring the performance of the concrete product.
Smart Images
Figure CN224408014U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete mixing technology, and in particular to a concrete mixing device with compound mineral admixtures. Background Technology
[0002] Composite mineral admixture concrete refers to concrete systems in which two or more mineral admixtures (such as fly ash, mineral powder, silica fume, etc.) are added to the concrete at the same time to optimize the performance through synergistic effects. In the production process of this type of concrete, multiple raw materials need to be added to the mixing tank for mixing to finally form the required composite concrete material.
[0003] However, during the mixing process, it was found that some powdered admixtures, such as mineral powder and silica fume, may clump together due to moisture, resulting in uneven mixing of these raw materials and affecting the performance of the concrete.
[0004] Therefore, it is necessary to provide a new concrete mixing device with compound mineral admixtures to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this invention is to provide a concrete mixing device for compound mineral admixtures that can pre-crush powdered raw materials and improve the mixing uniformity.
[0006] To solve the above-mentioned technical problems, the present invention provides a concrete mixing device for compound mineral admixtures, comprising: a mixing tank, a sealing plate fixedly installed on the top of the mixing tank by bolts, a stirrer installed inside the mixing tank, a powder conduit and a pretreatment box fixedly installed on the outer wall of the mixing tank, a discharge port at the bottom of the pretreatment box extending into the powder conduit, a perforated plate inside the pretreatment box, both sides of the perforated plate contacting the inner walls of both sides of the pretreatment box, multiple crushing tips fixedly installed on the top of the perforated plate, baffle slides fixedly installed on both sides of the perforated plate, the baffle slides contacting the inner walls of the pretreatment box, and sliding openings on both sides of the pretreatment box, with the two baffle slides respectively adapted to the two sliding openings.
[0007] Preferably, lifting slide plates are slidably installed in both of the sliding openings, and the sides of the two lifting slide plates that are close to each other are fixedly connected to the two stop slide plates respectively. Protruding blocks are fixedly installed on both outer walls of the pretreatment box, and guide rods are slidably installed on each of the two protruding blocks. The bottom ends of the two guide rods are fixedly connected to the two lifting slide plates respectively, and end baffles are fixedly installed on the top ends of the two guide rods. Return springs are sleeved on each of the two guide rods, and the top ends of the two return springs are fixedly connected to the two end baffles respectively, and the bottom ends of the two return springs are fixedly connected to the two protruding blocks respectively.
[0008] Preferably, a spiral frame is movably fitted on the pretreatment box, and the bottoms of the two lifting slides are fixedly connected to the spiral frame. A toothed rack is fixedly installed on the side of the spiral frame near the mixing tank. A drive motor is fixedly installed on the mixing tank, and a semi-toothed gear is fixedly fitted on the output shaft of the drive motor. The semi-toothed gear is adapted to the toothed rack.
[0009] Preferably, shock-absorbing pads are fixedly installed at the bottom of both of the two protruding blocks, the bottom of the two shock-absorbing pads are in contact with the two lifting slides respectively, and the two guide rods pass through the two shock-absorbing pads respectively and are movably connected to the corresponding shock-absorbing pads.
[0010] Preferably, a vertical slide rod is slidably mounted on the sealing plate, the bottom end of the vertical slide rod extends into the mixing tank and is fixedly mounted with a hollow mounting box, the top end of the stirrer is rotatably connected to the bottom of the hollow mounting box, a first reduction motor is fixedly mounted inside the hollow mounting box, and the output shaft of the first reduction motor is fixedly connected to the top end of the stirrer.
[0011] Preferably, a back-connecting plate is fixedly installed on the top of the sealing plate, a rotating shaft is rotatably installed on the back-connecting plate, a rotating disk is fixedly installed at the end of the rotating shaft, an eccentric shaft is fixedly installed on the rotating disk, a waist hole linkage is fixedly installed at the top of the vertical slide rod, the eccentric shaft passes through the waist hole linkage and slides in contact with the inner wall of the waist hole linkage, a second reduction motor is fixedly installed on one side of the back-connecting plate, and the output shaft of the second reduction motor is fixedly connected to one end of the rotating shaft.
[0012] Preferably, a liquid conduit is fixedly installed on the outer wall of the mixing tank away from the pretreatment tank, and a sealed inspection door is provided on one side of the hollow mounting box.
[0013] Compared with related technologies, the concrete mixing device with compound mineral admixtures provided by this utility model has the following beneficial effects:
[0014] This utility model provides a concrete mixing device for compound mineral admixtures. By setting a perforated sieve plate that can reciprocate up and down in the pretreatment box, and setting crushing tips on the perforated sieve plate, the device can break up clumps of powdery raw materials, so that the powdery raw materials can be evenly mixed with other raw materials, improving the mixing quality. Furthermore, through the up and down reciprocating motion, the mixer can increase the mixing space in the mixing tank, thereby enabling deeper mixing and further improving the mixing effect. Attached Figure Description
[0015] Figure 1 A schematic diagram of a preferred embodiment of the concrete mixing device with compound mineral admixtures provided by this utility model;
[0016] Figure 2 This is a cross-sectional view of the mixing tank in this utility model;
[0017] Figure 3 This is a schematic diagram of the assembly of the pretreatment box and the spiral frame strip in this utility model;
[0018] Figure 4 This is a schematic diagram of the internal structure of the pretreatment box in this utility model;
[0019] Figure 5 This is a schematic diagram of the connection structure between the stirrer and the hollow mounting box in this utility model;
[0020] Figure 6 This is a schematic diagram of the connection structure of the rotating shaft, rotating disk and eccentric shaft in this utility model;
[0021] Figure 7 This is a cross-sectional view of the pretreatment box in this utility model;
[0022] Figure 8 This is a schematic diagram of the connection structure between the middle baffle slide and the lifting slide of this utility model;
[0023] Figure 9 This is a cross-sectional view of the connection structure between the lifting slide plate and the convex block in this utility model.
[0024] Labels in the diagram: 1. Mixing tank; 2. Sealing plate; 3. Vertical slide bar; 4. Hollow mounting box; 5. Agitator; 6. Back plate; 7. Rotating shaft; 8. Rotating disc; 9. Eccentric shaft; 10. Waist hole linkage; 11. Powder guide pipe; 12. Pretreatment box; 13. Screen plate; 14. Crushing tip; 15. Baffle plate; 16. Lifting plate; 17. Recurved frame bar; 18. Toothed rack; 19. Drive motor; 20. Half toothed gear; 21. Convex block; 22. Guide rod; 23. End baffle; 24. Return spring. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] Please refer to the following: Figures 1-9 The concrete mixing device with compound mineral admixtures includes: a mixing tank 1, with a sealing plate 2 bolted to the top of the mixing tank 1. The two are designed to be detachable for easy maintenance and repair. An agitator 5 is installed inside the mixing tank 1 to mix the raw materials. A powder conduit 11 and a pretreatment box 12 are fixedly installed on the outer wall of the mixing tank 1. The bottom of the pretreatment box 12 has a discharge port extending into the powder conduit 11. Furthermore, a liquid conduit is fixedly installed on the outer wall of the mixing tank 1 away from the pretreatment box 12 for adding liquid raw materials. Inside the pretreatment box 12, there is a perforated plate 13. The two sides of the perforated plate 13 are in contact with the inner walls of the two sides of the pretreatment box 12, and multiple crushing tips 14 are fixedly installed on the top of the perforated plate 13. When the clump of raw materials collides with the crushing tips 14, it can be easily broken up. On both sides of the perforated plate 13, there are baffle slides 15, and the baffle slides 15 are in contact with the inner walls of the pretreatment box 12. On both sides of the pretreatment box 12, there are sliding openings. The two baffle slides 15 are adapted to the two sliding openings respectively. The design of the sliding openings can provide sufficient space for the perforated plate 13 to slide up and down.
[0027] In the above method, in order to drive the screen plate 13 to move up and down reciprocally to achieve a screening effect, lifting slide plates 16 are slidably installed in both sliding ports. The sides of the two lifting slide plates 16 that are close to each other are fixedly connected to the two stop slide plates 15. Protruding blocks 21 are fixedly installed on both outer walls of the pretreatment box 12. Guide rods 22 are slidably installed on the two protruding blocks 21. The bottom ends of the two guide rods 22 are fixedly connected to the two lifting slide plates 16, and the top ends of the two guide rods 22 are fixedly installed with end baffles 23. Return springs 24 are sleeved on the two guide rods 22. The top ends of the two return springs 24 are fixedly connected to the two end baffles 23, and the bottom ends of the two return springs 24 are fixedly connected to the two protruding blocks 21. These return springs 24 serve a rebound function. When the perforated plate 13 descends, the return spring 24 is compressed. When the perforated plate 13 is released, the compressed return spring 24 releases its compression force, which can bring the perforated plate 13 back to its original state, thereby forming an up-and-down oscillating force. In addition, a spiral frame 17 is movably sleeved on the pretreatment box 12. The bottom of the two lifting slide plates 16 are fixedly connected to the spiral frame 17. A toothed rack 18 is fixedly installed on the side of the spiral frame 17 near the mixing tank 1. A drive motor 19 is fixedly installed on the mixing tank 1. A semi-toothed gear 20 is fixedly sleeved on its output shaft. The semi-toothed gear 20 is adapted to the toothed rack 18. During the continuous operation of the drive motor 19, the teeth on the semi-toothed gear 20 and the teeth on the toothed rack 18 form intermittent meshing, thereby automatically realizing the reciprocating up-and-down lifting of the perforated plate 13, forming a vibrating screening effect.
[0028] In this method, in order to prevent excessive noise from being generated when the lifting slide plate 16 collides with the convex block 21, shock-absorbing pads are fixedly installed at the bottom of the two convex blocks 21. The bottom of the two shock-absorbing pads contacts the two lifting slide plates 16 respectively, and the two guide rods 22 pass through the two shock-absorbing pads respectively and are movably connected to the corresponding shock-absorbing pads.
[0029] In this method, to enable the stirrer 5 to have a large stirring space within the mixing tank 1, a vertical slide rod 3 is slidably mounted on the sealing plate 2, with its bottom end extending into the mixing tank 1 and a hollow mounting box 4 fixedly mounted thereon. The top of the stirrer 5 is rotatably connected to the bottom of the hollow mounting box 4. A first reduction motor is fixedly mounted inside the hollow mounting box 4, and its output shaft is fixedly connected to the top of the stirrer 5. Furthermore, a back-connecting plate 6 is fixedly mounted on the top of the sealing plate 2, and a rotating shaft 7 is rotatably mounted on it. A rotating disc 8 is fixedly mounted at the end of the rotating shaft 7, and an eccentric shaft 9 is fixedly mounted on the rotating disc 8. A waist hole linkage 10 is fixedly mounted at the top of the vertical slide rod 3, and the eccentric shaft 9 passes through the waist hole linkage 10 and slides in contact with the inner wall of the waist hole linkage 10. A second reduction motor is fixedly mounted on one side of the back-connecting plate 6, and its output shaft is fixedly connected to one end of the rotating shaft 7. A sealed inspection door is provided on one side of the hollow mounting box 4 to facilitate subsequent maintenance of the first reduction motor.
[0030] The working principle of the concrete mixing device with compound mineral admixtures provided by this utility model is as follows:
[0031] When mixing raw materials is required, liquid raw materials are added to the mixing tank 1 through a liquid conduit, and then powdered raw materials are poured into the pretreatment tank 12. Simultaneously, the drive motor 19 is started, and its output shaft drives the semi-toothed gear 20 to rotate. When the teeth of the semi-toothed gear 20 contact the teeth on the toothed rack 18, it lowers the rack 18, thus lowering the lifting slide plate 16 and the screen plate 13 together. At this time, the return spring 24 is in a deeply compressed state. When the teeth on the semi-toothed gear 20 separate from the teeth on the toothed rack 18, the deeply compressed return spring 24 automatically pulls back, causing the screen plate 13 to rise sharply until the lifting slide plate 16 collides with the shock-absorbing pad. At this point, the powdered raw materials on the screen plate 13 will... The process involves an up-and-down oscillation until the teeth on the semi-toothed gear 20 engage with the teeth on the toothed strip 18 again, causing the sieve plate 13 to descend. When the teeth separate, the sieve plate 13 rises again, and this process repeats, causing the powdered raw material on the sieve plate 13 to continuously oscillate up and down. During this process, on the one hand, the force of the up-and-down oscillation can break up some clumps, and on the other hand, the crushing tip 14 can impact the raw material, thereby breaking up the clumps of raw material. The two crushing methods work together to completely break up the clumps of powdered raw material. The broken raw material then falls through the sieve plate 13 and into the mixing tank 1 through the powder guide tube 11.
[0032] After all the materials are poured in, the first reduction motor can be started. Its output shaft drives the agitator 5 to rotate, thereby mixing the raw materials. At the same time, the second reduction motor is started, and its output shaft drives the rotating shaft 7 to rotate. At this time, the rotating disk 8 rotates with the eccentric shaft 9. During the rotation of the eccentric shaft 9, the waist hole linkage 10 is constrained by it and limited by the vertical slide rod 3. It will move up and down linearly with the rotation of the eccentric shaft 9. This will cause the agitator 5 to move up and down repeatedly, thereby increasing the mixing area of the agitator 5 in the mixing tank 1 and continuously changing the mixing position, thereby improving the mixing effect. After the mixing is completed, the discharge port at the bottom of the mixing tank 1 can be opened to discharge the mixture.
[0033] Compared with related technologies, the concrete mixing device with compound mineral admixtures provided by this utility model has the following beneficial effects:
[0034] This utility model provides a concrete mixing device for compound mineral admixtures. By setting a perforated sieve plate 13 that can reciprocate up and down in the pretreatment box 12, and a crushing tip 14 set on the perforated sieve plate 13, the clumps of powdery raw materials can be broken up, so that the powdery raw materials can be evenly mixed with other raw materials, improving the mixing quality. Furthermore, through the up and down reciprocating motion, the agitator 5 can increase the mixing space in the mixing tank 1, thereby enabling deeper mixing and further improving the mixing effect.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A concrete mixing device with compound mineral admixtures, comprising a mixing tank, characterized in that, A sealing plate is bolted to the top of the mixing tank. An agitator is installed inside the mixing tank. A powder guide and a pretreatment box are fixedly installed on the outer wall of the mixing tank. A discharge port is provided at the bottom of the pretreatment box, extending into the powder guide. A perforated sieve plate is provided inside the pretreatment box. The two sides of the perforated sieve plate contact the inner walls of the two sides of the pretreatment box. Multiple crushing tips are fixedly installed on the top of the perforated sieve plate. Baffle slides are fixedly installed on both sides of the perforated sieve plate, contacting the inner walls of the pretreatment box. Sliding openings are provided on both sides of the pretreatment box, and the two baffle slides are adapted to the two sliding openings respectively.
2. The concrete mixing device with compound mineral admixtures according to claim 1, characterized in that, Lifting slide plates are slidably installed in both of the two sliding openings. The sides of the two lifting slide plates that are close to each other are fixedly connected to the two stop slide plates. Protruding blocks are fixedly installed on both outer walls of the pretreatment box. Guide rods are slidably installed on the two protruding blocks. The bottom ends of the two guide rods are fixedly connected to the two lifting slide plates. End baffles are fixedly installed on the top ends of the two guide rods. Return springs are sleeved on the two guide rods. The top ends of the two return springs are fixedly connected to the two end baffles. The bottom ends of the two return springs are fixedly connected to the two protruding blocks.
3. The concrete mixing device with compound mineral admixtures according to claim 2, characterized in that, The pretreatment box is movably fitted with a spiral frame strip, and the bottoms of the two lifting slides are fixedly connected to the spiral frame strip. A toothed rack is fixedly installed on the side of the spiral frame strip near the mixing tank. A drive motor is fixedly installed on the mixing tank, and a semi-toothed gear is fixedly fitted on the output shaft of the drive motor. The semi-toothed gear is adapted to the toothed rack.
4. The concrete mixing device with compound mineral admixtures according to claim 2, characterized in that, Both of the two protruding blocks have shock-absorbing pads fixedly installed at their bottoms. The bottoms of the two shock-absorbing pads are in contact with the two lifting slides respectively, and the two guide rods pass through the two shock-absorbing pads respectively and are movably connected to the corresponding shock-absorbing pads.
5. The concrete mixing device with compound mineral admixtures according to claim 1, characterized in that, A vertical slide rod is slidably installed on the sealing plate. The bottom end of the vertical slide rod extends into the mixing tank and is fixedly installed with a hollow mounting box. The top end of the stirrer is rotatably connected to the bottom of the hollow mounting box. A first reduction motor is fixedly installed inside the hollow mounting box, and the output shaft of the first reduction motor is fixedly connected to the top end of the stirrer.
6. The concrete mixing device with compound mineral admixtures according to claim 5, characterized in that, A back-connecting plate is fixedly installed on the top of the sealing plate. A rotating shaft is rotatably installed on the back-connecting plate. A rotating disk is fixedly installed at the end of the rotating shaft. An eccentric shaft is fixedly installed on the rotating disk. A waist hole linkage is fixedly installed at the top of the vertical slide rod. The eccentric shaft passes through the waist hole linkage and slides in contact with the inner wall of the waist hole linkage. A second reduction motor is fixedly installed on one side of the back-connecting plate. The output shaft of the second reduction motor is fixedly connected to one end of the rotating shaft.
7. The concrete mixing device with compound mineral admixtures according to claim 5, characterized in that, A liquid conduit is fixedly installed on the outer wall of the mixing tank away from the pretreatment tank, and a sealed inspection door is provided on one side of the hollow installation box.