An eccentric stripping structure for mortar stripping aggregate regeneration

Abstract

The utility model relates to waste and old concrete mortar stripping aggregate recycling technical field, concretely relates to an eccentric stripping structure for mortar stripping aggregate recycling, its characterized in that: including rotation setting's stripping rotor and non-rotation setting's lining ring subassembly, stripping rotor and lining ring subassembly inside and outside vertical arrangement and the stripping cavity that forms between them has gradually reduced from top to bottom interval spacing, stripping rotor is located on the main shaft, the axis of lining ring subassembly coincides with the rotation center line of main shaft, the axis of stripping rotor deviates from the rotation center line of main shaft. The utility model discloses stripping rotor is in eccentric position relative to lining ring subassembly, in the rotation process of stripping rotor, it is favorable to further increase the mutual extrusion effect between aggregate, to further improve mortar stripping effect.

Description

Technical Field

[0001] This utility model relates to the field of waste concrete mortar stripping aggregate recycling technology, specifically to an eccentric stripping structure for mortar stripping aggregate recycling. Background Technology

[0002] Recycling aggregates from waste concrete through mortar stripping can reduce dependence on natural sand and gravel resources and is in line with the concept of green and sustainable development. However, mainstream mortar stripping aggregate recycling equipment has not yet been developed in the market. In practice, vertical shaft impact crushers are often used as a substitute, which has several problems: low output, incomplete mortar stripping, excessive crushing of aggregates, and high proportion of fine materials. The stripping structure is the key structure of mortar stripping aggregate recycling equipment. Therefore, how to design a stripping structure that increases the mutual compression effect between aggregates to further improve the mortar stripping effect is the problem that this application aims to solve. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an eccentric stripping structure for mortar stripping aggregate regeneration, which improves the stripping effect by placing the stripping rotor in an eccentric position relative to the bushing assembly, thereby further increasing the mutual squeezing effect between aggregates during the rotation of the stripping rotor.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an eccentric stripping structure for mortar stripping aggregate regeneration, comprising a rotatable stripping rotor and a non-rotatable bushing assembly, wherein the stripping rotor and the bushing assembly are arranged vertically inside and outside and a stripping cavity with a gradually decreasing distance from top to bottom is formed between them, the stripping rotor is mounted on a main shaft, the axis of the bushing assembly coincides with the rotation center line of the main shaft, and the axis of the stripping rotor deviates from the rotation center line of the main shaft.

[0005] Furthermore, the main shaft includes a lower shaft section and an upper shaft section fixedly disposed at the top of the lower shaft section. The axis of the lower shaft section coincides with the rotation center line of the main shaft. The stripping rotor is fixedly installed on the upper shaft section by a tapered expansion sleeve.

[0006] Furthermore, both the upper and lower ends of the lower shaft section are rotatably mounted in bearing housings via at least one rolling bearing.

[0007] Furthermore, an upper shaft end sealing cover is fixedly installed on the upper end of the bearing housing, and a lower shaft end sealing cover is fixedly installed on the lower end of the bearing housing.

[0008] Furthermore, a connecting key is provided between the tapered expansion sleeve and the upper shaft section.

[0009] Furthermore, the centerline of the upper shaft section coincides with the centerline of the lower shaft section, and the tapered expansion sleeve is a tapered eccentric expansion sleeve that deviates the centerline of the stripped rotor from the centerline of the upper shaft section.

[0010] Furthermore, the centerline of the upper shaft section deviates from the centerline of the lower shaft section, while the centerline of the stripped rotor coincides with the centerline of the upper shaft section.

[0011] Furthermore, the deviation between the axis of the stripped rotor and the rotation center line of the main shaft is no more than 20mm.

[0012] Furthermore, a material distribution disc is installed at the center of the upper end face of the stripping rotor.

[0013] Furthermore, the liner assembly includes a fixed cone frame and a fixed cone liner plate. The fixed cone liner plate is detachably fitted inside the fixed cone frame. The inner circumferential surface of the fixed cone liner plate is the fixed peeling surface. The peeling rotor includes a moving cone frame and a moving cone liner plate. The moving cone liner plate is detachably fitted outside the moving cone frame. The outer circumferential surface of the moving cone liner plate is the moving peeling surface. The peeling chamber is provided with an upper collision chamber, a middle scraping chamber, and a lower grinding chamber from top to bottom.

[0014] As described above, the eccentric stripping structure for mortar stripping aggregate recycling provided by this utility model has the following beneficial effects: Through the cooperation of the stripping rotor and the bushing assembly, the bushing assembly is in a fixed state while the stripping rotor is in a rotating state. When the waste concrete material to be stripped enters the stripping chamber, it will undergo collisions between materials from top to bottom, scraping by the stripping rotor, and finally, shearing and grinding off the surface mortar through the smallest discharge port at the bottom of the stripping chamber, thus achieving the purpose of mortar stripping aggregate recycling. Simultaneously, by aligning the axis of the bushing assembly with the rotation center line of the main shaft, while the axis of the stripping rotor deviates from the rotation center line of the main shaft, the stripping rotor is positioned eccentrically relative to the bushing assembly. During the rotation of the stripping rotor, this further increases the mutual squeezing effect between the aggregates, thereby further improving the mortar stripping effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an eccentric stripping structure for mortar stripping aggregate regeneration according to Embodiment 1 of this utility model.

[0016] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 for Figure 1 A magnified view of a portion of point B in the middle.

[0018] Figure 4 This is a schematic diagram of the eccentric three-dimensional structure of the conical expansion sleeve in Example 1.

[0019] Figure 5 This is a schematic diagram of the eccentric structure of the spindle in Example 2.

[0020] In the diagram: 1-Stripping rotor; 11-Moving cone frame; 12-Moving cone liner; 2-Ring assembly; 21-Fixed cone frame; 22-Fixed cone liner; 3-Stripping chamber; 31-Upper collision chamber; 32-Middle scraping chamber; 33-Lower grinding chamber; 4-Main shaft; 41-Lower shaft section; 42-Upper shaft section; 5-Conical expansion sleeve; 61-Bearing seat; 62-Rolling bearing; 71-Upper shaft end sealing cover; 72-Lower shaft end sealing cover; 8-Connecting key; 9-Distribution disc. Detailed Implementation

[0021] The present invention will be further described below through specific embodiments.

[0022] Example 1

[0023] like Figures 1 to 4 As shown, the eccentric stripping structure for mortar stripping aggregate recycling according to this utility model includes a rotatable stripping rotor 1 and a non-rotatable bushing assembly 2. The stripping rotor 1 and the bushing assembly 2 are arranged vertically inside and outside, and a stripping cavity 3 is formed between them with the distance gradually decreasing from top to bottom. The stripping rotor 1 is mounted on a main shaft 4. The axis of the bushing assembly 2 coincides with the rotation center line of the main shaft 4, and the axis of the stripping rotor 1 deviates from the rotation center line of the main shaft 4.

[0024] With the cooperation of the stripping rotor 1 and the liner assembly 2, the liner assembly 2 is in a fixed state, and the stripping rotor 1 is in a rotating state. When the waste concrete material to be stripped enters the stripping chamber 3, it will undergo collision between materials from top to bottom, scraping by the stripping rotor 1, and finally shearing and grinding off the surface mortar through the smallest discharge port at the bottom of the stripping chamber 3 to complete the stripping and discharge, thereby achieving the purpose of mortar stripping and aggregate regeneration. At the same time, by making the axis of the liner assembly 2 coincide with the rotation center line of the main shaft 4, and the axis of the stripping rotor 1 deviates from the rotation center line of the main shaft 4, the stripping rotor 1 is placed in an eccentric position relative to the liner assembly 2. During the rotation of the stripping rotor 1, it is beneficial to further increase the mutual squeezing effect between aggregates, so as to further improve the mortar stripping effect.

[0025] The main shaft 4 includes a lower shaft section 41 and an upper shaft section 42 fixedly disposed at the top end of the lower shaft section 41. The axis of the lower shaft section 41 coincides with the rotation center line of the main shaft 4. The stripping rotor 1 is fixedly installed on the upper shaft section 42 by a tapered expansion sleeve 5. Both the upper and lower ends of the lower shaft section 41 are rotatably installed in a bearing seat 61 by at least one rolling bearing 62. An upper shaft end sealing cover 71 is fixedly installed at the upper end of the bearing seat 61, and a lower shaft end sealing cover 72 is fixedly installed at the lower end of the bearing seat 61. A connecting key 8 is provided between the tapered expansion sleeve 5 and the upper shaft section 42.

[0026] The centerline of the upper shaft section 42 coincides with the centerline of the lower shaft section 41. The tapered expansion sleeve 5 is a tapered eccentric expansion sleeve that deviates the centerline of the peeling rotor 1 from the centerline of the upper shaft section 42. This facilitates the alignment of the centerline of the bushing assembly 2 with the rotation centerline of the main shaft 4, while the centerline of the peeling rotor 1 deviates from the rotation centerline of the main shaft 4, thereby placing the peeling rotor 1 in an eccentric position relative to the bushing assembly 2.

[0027] Preferably, the deviation between the axis of the stripping rotor 1 and the rotation center line of the main shaft 4 is no more than 20mm.

[0028] In addition, a material distribution plate 9 is installed at the center of the upper end face of the stripping rotor 1, which can play a certain role in uniformly distributing materials, which is conducive to making the entire shaft system uniformly stressed, and also helps to reduce the wear on the stripping rotor 1 and the impact on the shaft end of the main shaft 4.

[0029] The liner assembly 2 includes a fixed cone frame 21 and a fixed cone liner 22. The fixed cone liner 22 is detachably fitted inside the fixed cone frame 21. The inner circumferential surface of the fixed cone liner 22 is a fixed peeling surface. The peeling rotor 1 includes a moving cone frame 11 and a moving cone liner 12. The moving cone liner 12 is detachably fitted outside the moving cone frame 11. The outer circumferential surface of the moving cone liner 12 is a moving peeling surface. The peeling chamber 3 is provided with an upper collision chamber 31, a middle scraping chamber 32 and a lower grinding chamber 33 from top to bottom.

[0030] Driven by the rotation of the moving cone liner 12, when the waste concrete material to be peeled enters the peeling chamber 3, it will pass through the upper collision chamber 31, the middle scraping chamber 32, and the lower grinding chamber 33 from top to bottom. The upper collision chamber 31 has a relatively large spacing, which can accommodate a large number of waste concrete particles side by side. In the upper collision chamber 31, the collision between materials is more prominent, so as to achieve the initial peeling of the mortar on the surface of the waste concrete material. Since the spacing of the middle scraping chamber 32 is smaller than that of the upper collision chamber 31, the number of waste concrete particles that can be accommodated side by side is also smaller. In the middle scraping chamber 32, the waste concrete material can have more contact with the moving cone liner 12 and be scraped, so as to achieve the sanding of the surface of the waste concrete material. The secondary stripping of the slurry occurs because the spacing of the lower grinding chamber 33 is further reduced compared to the spacing of the middle scraping chamber 32, resulting in a further decrease in the number of waste concrete particles that can be accommodated side by side. Within the lower grinding chamber 33, the waste concrete material can come into more contact with the moving cone liner 12 and the fixed cone liner 22 and be sheared and ground, thereby achieving the final stripping of the mortar on the surface of the waste concrete material and controlling the discharge particle size. Therefore, the waste concrete material to be stripped will pass through the collision between materials, the scraping of the stripping rotor 1, and finally the shearing and grinding of the surface mortar through the smallest discharge port at the bottom of the stripping chamber 3 from top to bottom to complete the stripping and discharge. This improves both the mortar stripping effect and production capacity without excessively crushing the aggregate and reducing the proportion of fine materials.

[0031] Preferably, the fixed peeling surface is a fixed smooth surface, a fixed vertical peeling tooth surface, a fixed oblique peeling tooth surface, or a fixed spiral peeling tooth surface, and the movable peeling surface is a movable smooth surface, a movable vertical peeling tooth surface, a movable oblique peeling tooth surface, or a movable spiral peeling tooth surface.

[0032] When the fixed peeling surface is a fixed smooth surface, there are no fixed peeling flat teeth on the fixed peeling surface. When the moving peeling surface is a moving smooth surface, there are no moving peeling flat teeth on the moving peeling surface. At this time, the peeling cavity 3 formed by the fixed peeling surface and the moving peeling surface is a smooth toothless cavity type.

[0033] When the fixed peeling surface is a fixed vertical peeling tooth surface, a plurality of fixed peeling flat teeth arranged vertically and at least one fixed material-pushing high tooth arranged vertically and protruding from the fixed peeling flat teeth are fixedly provided on the fixed peeling surface. The plurality of fixed peeling flat teeth and at least one fixed material-pushing high tooth are spaced apart along the circumferential direction of the fixed peeling surface. When the moving peeling surface is a moving vertical peeling tooth surface, a plurality of moving peeling flat teeth arranged vertically and at least one moving material-pushing high tooth arranged vertically and protruding from the moving peeling flat teeth are fixedly provided on the moving peeling surface. The plurality of moving peeling flat teeth and at least one moving material-pushing high tooth are spaced apart along the circumferential direction of the moving peeling surface. At this time, the peeling cavity 3 formed by the fixed peeling surface and the moving peeling surface is a vertical rectangular tooth cavity type.

[0034] When the fixed peeling surface is a fixed oblique peeling tooth surface, a plurality of obliquely arranged fixed peeling flat teeth and at least one obliquely arranged fixed material-pulling high tooth protruding from the fixed peeling flat teeth are fixedly provided on the fixed peeling surface. The plurality of fixed peeling flat teeth and at least one fixed material-pulling high tooth are spaced apart along the circumferential direction of the fixed peeling surface. When the moving peeling surface is a moving oblique peeling tooth surface, a plurality of obliquely arranged moving peeling flat teeth and at least one obliquely arranged moving material-pulling high tooth protruding from the moving peeling flat teeth are fixedly provided on the moving peeling surface. The plurality of moving peeling flat teeth and at least one moving material-pulling high tooth are spaced apart along the circumferential direction of the moving peeling surface. At this time, the peeling cavity 3 formed by the fixed peeling surface and the moving peeling surface is an oblique rectangular tooth cavity type.

[0035] When the fixed peeling surface is a fixed spiral peeling tooth surface, a plurality of fixed peeling flat teeth arranged in a spiral and at least one fixed material-pushing high tooth arranged in a spiral and protruding from the fixed peeling flat teeth are fixedly provided on the fixed peeling surface. The plurality of fixed peeling flat teeth and at least one fixed material-pushing high tooth are spaced apart along the circumferential direction of the fixed peeling surface. When the moving peeling surface is a moving spiral peeling tooth surface, a plurality of moving peeling flat teeth arranged in a spiral and at least one moving material-pushing high tooth arranged in a spiral and protruding from the moving peeling flat teeth are fixedly provided on the moving peeling surface. The plurality of moving peeling flat teeth and at least one moving material-pushing high tooth are spaced apart along the circumferential direction of the moving peeling surface. At this time, the peeling cavity 3 formed by the fixed peeling surface and the moving peeling surface is a spiral arc-shaped tooth cavity type.

[0036] In one embodiment, the fixed peeling surface is a conical surface that is wider at the top and narrower at the bottom, and the moving peeling surface is a conical surface that is narrower at the top and wider at the bottom. In this case, the longitudinal section of the peeling cavity 3 is V-shaped on one side, which is a standard cavity type. It can increase the degree of compression between aggregates. It is used for waste concrete with larger particle size and easy separation. It can effectively reduce the aggregate throughput time, reduce the generation of fine particles, and increase the processing capacity of the peeling host.

[0037] In another embodiment, both the fixed peeling surface and the moving peeling surface are conical in shape, narrow at the top and wide at the bottom, and the longitudinal section of the peeling cavity 3 is V-shaped on both sides, which is a narrow cavity type.

[0038] Example 2

[0039] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the centerline of the upper shaft segment 42 is deviated from the centerline of the lower shaft segment 41, while the centerline of the stripping rotor 1 coincides with the centerline of the upper shaft segment 42. This facilitates the alignment of the centerline of the bushing assembly 2 with the rotation centerline of the main shaft 4, while the centerline of the stripping rotor 1 is deviated from the rotation centerline of the main shaft 4, thereby placing the stripping rotor 1 in an eccentric position relative to the bushing assembly 2.

[0040] Other technical features are the same as in Embodiment 1.

[0041] The above are only some specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An eccentric stripping structure for mortar stripping aggregate recycling, characterized in that: The device includes a rotatable stripping rotor and a non-rotatable bushing assembly. The stripping rotor and the bushing assembly are arranged vertically inside and outside the device, and a stripping cavity with a gradually decreasing distance between them from top to bottom is formed between them. The stripping rotor is mounted on a main shaft. The axis of the bushing assembly coincides with the rotation center line of the main shaft, while the axis of the stripping rotor deviates from the rotation center line of the main shaft.

2. The eccentric stripping structure for mortar stripping aggregate recycling according to claim 1, characterized in that: The main shaft includes a lower shaft section and an upper shaft section fixedly disposed at the top of the lower shaft section. The axis of the lower shaft section coincides with the rotation center line of the main shaft. The stripping rotor is fixedly installed on the upper shaft section by a tapered expansion sleeve.

3. The eccentric stripping structure for mortar stripping aggregate recycling according to claim 2, characterized in that: Both ends of the lower shaft section are rotatably mounted in bearing housings via at least one rolling bearing.

4. An eccentric stripping structure for mortar stripping aggregate recycling according to claim 3, characterized in that: An upper shaft end sealing cover is fixedly installed on the upper end of the bearing housing, and a lower shaft end sealing cover is fixedly installed on the lower end of the bearing housing.

5. An eccentric stripping structure for mortar stripping aggregate regeneration according to claim 2, characterized in that: A connecting key is provided between the tapered expansion sleeve and the upper shaft section.

6. An eccentric stripping structure for mortar stripping aggregate recycling according to claim 2, characterized in that: The centerline of the upper shaft section coincides with the centerline of the lower shaft section, and the tapered expansion sleeve is a tapered eccentric expansion sleeve that deviates the centerline of the stripping rotor from the centerline of the upper shaft section.

7. An eccentric stripping structure for mortar stripping aggregate recycling according to claim 2, characterized in that: The centerline of the upper shaft segment deviates from the centerline of the lower shaft segment, while the centerline of the stripping rotor coincides with the centerline of the upper shaft segment.

8. An eccentric stripping structure for mortar stripping aggregate recycling according to claim 1, characterized in that: The deviation between the axis of the stripping rotor and the rotation center line of the main shaft is no more than 20mm.

9. An eccentric stripping structure for mortar stripping aggregate recycling according to claim 1, characterized in that: A material distribution plate is installed at the center of the upper end face of the stripping rotor.

10. An eccentric stripping structure for mortar stripping aggregate recycling according to claim 1, characterized in that: The liner assembly includes a fixed cone frame and a fixed cone liner plate. The fixed cone liner plate is detachably fitted inside the fixed cone frame. The inner circumferential surface of the fixed cone liner plate is the fixed peeling surface. The peeling rotor includes a moving cone frame and a moving cone liner plate. The moving cone liner plate is detachably fitted outside the moving cone frame. The outer circumferential surface of the moving cone liner plate is the moving peeling surface. The peeling chamber is provided with an upper collision chamber, a middle scraping chamber, and a lower grinding chamber from top to bottom.

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