A blending material pre-pulverizing device
Patent Information
- Application Number
- CN202522493242.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-25
AI Technical Summary
[0003]由于掺合料中常含有一定水分或粘性组分，传统粉碎辊表面无防粘设计，物料粉碎过程中易粘连在辊体表面形成结块，这些结块不仅会减小粉碎辊的有效工作面积，降低粉碎效率，还会导致后续物料与结块反复摩擦，额外消耗驱动能耗，更严重的是，粘连物料会堵塞粉碎腔室的流通通道，迫使设备频繁停机清理
[0020]1、本实用新型通过设置的粉碎辊表面的防粘层、网孔板顶端固定且端部抵在粉碎辊下半部分的刮板，实现了双重防粘与清料，防粘层减少物料初始粘连，刮板随粉碎辊转动实时刮下残留物料，避免传统防粘层单一使用时防粘效果有限、物料残留的问题，达到维持粉碎辊有效工作面积、提升粉碎效率的效果。
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Figure CN224878095U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crushing device technology, and more specifically, to a pre-crushing device for mixed materials. Background Technology
[0002] As a key component in concrete, building materials and other fields, admixtures directly affect the core properties of end products such as strength and water demand through their particle size distribution and fineness. Pre-crushing is the primary step in controlling the particle size of admixtures, and corresponding pre-crushing devices are usually used when performing pre-crushing operations.
[0003] Since the admixtures often contain a certain amount of moisture or viscous components, and traditional crushing rollers do not have an anti-stick design, the material easily sticks to the roller surface during the crushing process, forming clumps. These clumps not only reduce the effective working area of the crushing roller and reduce the crushing efficiency, but also cause subsequent materials to repeatedly rub against the clumps, consuming additional drive energy. More seriously, the sticky material can block the flow channel of the crushing chamber, forcing the equipment to stop frequently for cleaning.
[0004] Furthermore, although some crushing rollers employ an anti-sticking layer design to achieve an anti-sticking effect, their effectiveness is limited. The crushing roller area lacks components capable of scraping off adhering material, making it easy for some material to remain on the roller surface, thus affecting performance. Therefore, we propose a pre-crushing device for blended materials. Utility Model Content
[0005] The purpose of this invention is to provide a pre-crushing device for admixtures to address the deficiencies mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A pre-crushing device for admixtures includes a crushing box with a crushing chamber inside. Inside the crushing chamber are two symmetrical crushing rollers for crushing materials. An anti-sticking layer is provided on the surface of each crushing roller. The crushing rollers are driven by a drive motor. Feed guide plates are fixedly installed on the top left and right side walls of the crushing chamber, positioned above the crushing rollers. Mesh plates are fixedly installed on the bottom left and right side walls of the crushing box. The mesh plates have a mesh-like structure, and a scraper is fixedly installed at the top of the mesh plate, with the end of the scraper abutting against the lower half of the crushing roller.
[0008] Preferably, the feed guide plate is inclined downward at 45° to 60°, and the end of the feed guide plate extends to the center of the two crushing rollers;
[0009] This setting allows for material feeding operations.
[0010] Preferably, the scraper is inclined upward at 45° to 60°, and a discharge pipe is fixedly installed at the bottom of the crushing box;
[0011] This feature makes it easier for the scraper to remove material adhering to the crushing roller, and also facilitates the discharge operation at the discharge pipe.
[0012] Preferably, a plurality of support legs are fixedly installed on the side of the crushing box, and a support base is fixedly installed at the bottom end of the support legs.
[0013] Preferably, cleaning holes are provided on both the left and right side plates of the crushing box. The cleaning holes are located on the outside of the mesh plate. A cover plate for sealing the cleaning holes is detachably installed on the side of the crushing box.
[0014] This setting allows for cleaning of the perforated plate area.
[0015] Preferably, the crushing roller and the crushing box are rotatably connected by a rotating shaft, one of the rotating shafts is connected to the drive motor by a coupling, and gears are fixedly installed at the same end of both rotating shafts, and the two gears mesh with each other.
[0016] Preferably, the drive motor and the gear are both located outside the crushing box, and a feeding chamber is provided between the left and right feeding guide plates.
[0017] Preferably, the top of the crushing box is provided with a crossbeam plate, a stirring motor is fixedly installed on the crossbeam plate, a stirring shaft is fixedly installed at the end of the output shaft of the stirring motor, a stirring blade is fixedly installed on the stirring shaft, and the stirring blade is located in the feeding chamber.
[0018] This setting allows the material in the feed chamber to be agitated, making it easier for the material to be crushed between the two crushing rollers.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] 1. This utility model achieves dual anti-sticking and material cleaning by setting an anti-sticking layer on the surface of the crushing roller and a scraper fixed at the top of the mesh plate and abutting the lower half of the crushing roller. The anti-sticking layer reduces the initial adhesion of materials, and the scraper scrapes off the residual materials in real time as the crushing roller rotates. This avoids the problem of limited anti-sticking effect and material residue when the traditional anti-sticking layer is used alone, thus achieving the effect of maintaining the effective working area of the crushing roller and improving crushing efficiency.
[0021] 2. This utility model achieves precise material guidance and feeding through the feeding guide plates on the left and right sides of the top of the crushing chamber. The guide plates evenly transport the mixed material to the working area of the crushing roller, avoiding local wear and uneven crushing caused by material agglomeration.
[0022] 3. This utility model features a perforated plate, cleaning holes, and a cover plate. The perforated plate facilitates the falling of materials that enter between the crushing roller and the side wall of the crushing box, while the cleaning holes make it easy to periodically clean any blockages in the perforated area, making it convenient to use. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is one of the partial structural schematic diagrams of this utility model;
[0025] Figure 3 This is the second partial structural schematic diagram of the present utility model;
[0026] The meanings of the labels in the diagram are as follows:
[0027] 1. Crushing box; 10. Crushing chamber; 11. Discharge pipe; 12. Support leg; 121. Support base; 13. Feed guide plate; 131. Feed chamber; 14. Cleaning hole; 141. Cover plate; 15. Scraper; 151. Mesh plate;
[0028] 2. Crushing roller; 20. Rotating shaft; 21. Gear; 22. Drive motor; 23. Anti-stick layer;
[0029] 3. Crossbeam plate; 30. Stirring motor; 31. Stirring shaft; 32. Stirring blades. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.
[0031] Please see Figures 1-3This utility model provides a technical solution: a pre-crushing device for admixtures, including a crushing box 1, a crushing chamber 10 inside the crushing box 1, and two symmetrical crushing rollers 2 for crushing materials inside the crushing chamber 10. An anti-sticking layer 23 is provided on the surface of the crushing rollers 2. The crushing rollers 2 are driven by a drive motor 22. Feed guide plates 13 are fixedly installed on the top left and right side walls of the crushing chamber 10, located above the crushing rollers 2. A perforated plate 151 is fixedly installed on the bottom left and right side walls of the box 1. The perforated plate 151 has a perforated plate structure. A scraper 15 is fixedly installed on the top of the perforated plate 151. The end of the scraper 15 abuts against the lower half of the crushing roller 2, so that the anti-sticking layer 23 reduces material adhesion. The scraper 15 scrapes off residual material in real time. The feed guide plate 13 guides the material to be crushed evenly. The perforated plate 151 can make some small materials that fall between the crushing roller 2 and the side wall of the crushing box 1 fall out smoothly.
[0032] In this embodiment, the feed guide plate 13 is inclined downward at 45° to 60°, and the end of the feed guide plate 13 extends to the center of the two crushing rollers 2, so that the mixture can smoothly slide down the feed guide plate 13 into the core working area of the crushing roller 2.
[0033] Specifically, the scraper 15 is inclined upward at 45° to 60°, and the discharge pipe 11 is fixedly installed at the bottom of the crushing box 1, so that the scraper 15 and the rotating crushing roller 2 form a reasonable angle, making it easier to scrape off the material adhering to the surface of the crushing roller 2, and the material scraped by the scraper 15 can fall directly downward; the bottom wall of the crushing chamber 10 is inclined downward at 50° to 70°, so that the crushed material falls out of the discharge pipe 11 from the bottom of the crushing chamber 10 more smoothly.
[0034] like Figure 1 As shown, multiple support legs 12 are fixedly installed on the side of the crushing box 1. A support base 121 is fixedly installed at the bottom of the support legs 12, so that the support legs 12 raise the bottom of the crushing box 1, leaving enough discharge space for the discharge pipe 11, and the support base 121 increases the contact area with the ground.
[0035] like Figure 1 As shown, cleaning holes 14 are provided on both the left and right side plates of the crushing box 1. The cleaning holes 14 are located on the outside of the mesh plate 151. A cover plate 141 for sealing the cleaning holes 14 is detachably installed on the side of the crushing box 1. When the mesh plate 151 is blocked, the cover plate 141 can be removed and the residual material in the mesh can be cleaned directly through the cleaning holes 14 without disassembling the entire equipment, thus reducing maintenance difficulty and downtime.
[0036] In addition, the crushing roller 2 is rotatably connected to the crushing box 1 via a rotating shaft 20. One of the rotating shafts 20 is connected to the drive motor 22 via a coupling. Gears 21 are fixedly installed at the same end of both rotating shafts 20. The two gears 21 mesh with each other, so that the drive motor 22 drives one crushing roller 2 to rotate through the rotating shaft 20. The other crushing roller 2 rotates synchronously in the opposite direction through the meshing of the gears 21, ensuring that the two crushing rollers 2 have the same speed and opposite direction, so as to achieve efficient extrusion crushing of materials.
[0037] It is worth noting that the drive motor 22 and gear 21 are both located outside the crushing box 1 to avoid contamination and extend the service life of the components. A feeding chamber 131 is provided between the two left and right feeding guide plates 13. The feeding chamber 131 forms an independent feeding channel, which facilitates the centralized collection of materials to be crushed.
[0038] It is worth noting that a crossbeam plate 3 is provided on the top of the crushing box 1. A stirring motor 30 is fixedly installed on the crossbeam plate 3. A stirring shaft 31 is fixedly installed at the end of the output shaft of the stirring motor 30. A stirring blade 32 is fixedly installed on the stirring shaft 31. The stirring blade 32 is located in the feeding chamber 131, so that the stirring motor 30 drives the stirring blade 32 to rotate, stirring the material in the feeding chamber 131, ensuring that the material smoothly enters the crushing rollers 2 and is crushed.
[0039] Finally, it should be noted that the drive motor 22, stirring motor 30, corresponding control system, and external power supply involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted controllers and power supplies, are connected by wires. The specific connection method should refer to the working principle in this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.
[0040] When using the pre-crushing device for admixtures of this utility model, start the drive motor 22, which drives the two crushing rollers 2 to rotate synchronously in opposite directions through the rotating shaft 20 and the meshing gear 21. Start the stirring motor 30 on the crossbeam plate 3, so that the stirring shaft 31 drives the stirring blades 32 to rotate in the feeding chamber 131.
[0041] The mixture is poured into the feeding chamber 131, the stirring blades 32 stir the material, the material slides down the feeding guide plate 13 to the center of the two crushing rollers 2, and is crushed by the roller body. The anti-sticking layer 23 reduces the material adhesion, and the scraper 15 scrapes off the residual material attached to the roller body surface in real time.
[0042] After crushing, the material falls downward and is discharged from the bottom discharge pipe 11. If the mesh plate 151 is blocked, the cover plate 141 is removed after the equipment is shut down, and the mesh plate 151 is cleaned through the cleaning hole 14 to complete the process.
[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A pre-crushing device for admixtures, comprising a crushing chamber (1), characterized in that: The crushing box (1) is provided with a crushing chamber (10) inside. The crushing chamber (10) is provided with two symmetrical crushing rollers (2) for crushing materials. The surface of the crushing rollers (2) is provided with an anti-sticking layer (23). The crushing rollers (2) are driven by a drive motor (22). Feed guide plates (13) are fixedly installed on the top left and right sides of the crushing chamber (10). The feed guide plates (13) are located above the crushing rollers (2). Mesh plates (151) are fixedly installed on the bottom left and right sides of the crushing box (1). The mesh plates (151) are mesh-shaped plate structures. A scraper (15) is fixedly installed on the top of the mesh plates (151). The end of the scraper (15) abuts against the lower half of the crushing roller (2).
2. The pre-crushing device for admixtures according to claim 1, characterized in that: The feed guide plate (13) is inclined downward at 45° to 60°, and the end of the feed guide plate (13) extends to the center of the two crushing rollers (2).
3. The pre-crushing device for admixtures according to claim 1, characterized in that: The scraper (15) is set at an upward inclination of 45° to 60°, and the bottom of the crushing box (1) is fixedly installed with a discharge pipe (11).
4. The pre-crushing device for admixtures according to claim 1, characterized in that: Multiple support legs (12) are fixedly installed on the side of the crushing box (1), and a support base (121) is fixedly installed at the bottom of the support legs (12).
5. The pre-crushing device for admixtures according to claim 1, characterized in that: Cleaning holes (14) are provided on both the left and right sides of the crushing box (1). The cleaning holes (14) are located on the outside of the mesh plate (151). A cover plate (141) for sealing the cleaning holes (14) is detachably installed on the side of the crushing box (1).
6. The pre-crushing device for admixtures according to claim 1, characterized in that: The crushing roller (2) is rotatably connected to the crushing box (1) via a rotating shaft (20). One of the rotating shafts (20) is connected to the drive motor (22) via a coupling. Gears (21) are fixedly installed at the same end of both rotating shafts (20), and the two gears (21) mesh with each other.
7. The pre-crushing device for admixtures according to claim 6, characterized in that: The drive motor (22) and the gear (21) are both located outside the crushing box (1), and a feeding chamber (131) is provided between the two feeding guide plates (13) on the left and right.
8. The pre-crushing device for admixtures according to claim 7, characterized in that: The top of the crushing box (1) is provided with a crossbeam plate (3), a stirring motor (30) is fixedly installed on the crossbeam plate (3), a stirring shaft (31) is fixedly installed at the end of the output shaft of the stirring motor (30), a stirring blade (32) is fixedly installed on the stirring shaft (31), and the stirring blade (32) is located in the feed chamber (131).