Mortar preparation screening machine for recycling building aggregate

Abstract

The invention belongs to the technical field of separation, and discloses a mortar preparation screening machine for recycling building aggregate, which comprises a screening machine frame assembly, and is characterized in that the screening machine frame assembly comprises a screening machine arm, a concentric-square-shaped frame is fixedly arranged at the top of the screening machine arm, and an inner shaft rod with a first bevel gear is rotationally arranged at the top of the concentric-square-shaped frame; an outer shaft pipe with a second bevel gear is rotationally arranged at the bottom of the concentric-square-shaped frame, a screening roller disc assembly for conducting roller screening on the building aggregate is fixedly arranged at the bottom of the inner shaft rod, and a grinding disc assembly for crushing the unqualified building aggregate again is fixedly arranged on the outer wall of the outer shaft pipe. A reversely rotating disc body structure is formed between the grinding disc assembly and the screening roller disc assembly, in this way, reverse rotating crushing of building aggregate between the grinding disc assembly and the screening roller disc assembly is achieved, meanwhile, a screening gap is formed between every two adjacent screening rollers, and the screening efficiency is improved. At the moment, the building aggregate between the grinding disc assembly and the screening roller disc assembly is rotationally conveyed downwards, and meanwhile downward roller screening is achieved.

Description

Technical Field

[0001] This invention belongs to the field of separation technology, specifically relating to a mortar screening machine for the reuse of building aggregates. Background Technology

[0002] Mortar is a building material made by mixing cementitious materials (such as cement, lime, etc.), aggregates (such as sand) and water in a certain proportion. It is widely used in masonry, plastering, waterproofing and other projects. Building aggregates are aggregates made by crushing construction waste (concrete blocks, brick slag, stone waste, etc.), and are a type of green and environmentally friendly material that can be reused.

[0003] The existing technology has the following problems: When using building aggregates to make mortar, it is necessary to feed dry materials (building aggregates and cementitious materials) and mix them with water. However, there are incompletely crushed materials in the building aggregates, which leads to poor quality of the mortar produced later. At the same time, if traditional screening devices are used (traditional screening devices have too single function), the efficiency of feeding building aggregates will be greatly reduced. Moreover, if the feeding of dry materials (building aggregates and cementitious materials) is only done in a traditional fixed-point manner, it will lead to the accumulation of dry materials, resulting in insufficient mixing in the subsequent mortar production. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a mortar preparation and screening machine for the reuse of building aggregates, which features convenient slurry preparation and feeding.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mortar preparation screening machine for the reuse of building aggregates, comprising a screening frame assembly, the screening frame assembly including a screening arm, a return frame fixedly mounted on the top of the screening arm, an inner shaft rod with a first bevel gear rotatably mounted on the top of the return frame, and a drive motor for driving the inner shaft rod to rotate fixedly mounted on the top of the return frame, an outer shaft tube with a second bevel gear rotatably mounted on the bottom of the return frame, an intermediate bevel gear meshing with the first and second bevel gears rotatably mounted on one side of the return frame, a screening roller assembly for roller screening of building aggregates fixedly mounted on the bottom of the inner shaft rod, a grinding disc assembly for further crushing unqualified building aggregates fixedly mounted on the outer wall of the outer shaft tube, a material conveying disc assembly for dispersing building aggregates fixedly mounted on the bottom of the screening roller assembly, and a material feeding assembly for feeding building aggregates fixedly mounted on the bottom of the screening frame assembly.

[0006] In a preferred embodiment of a mortar preparation screening machine for the reuse of building aggregates, an installation arm is fixedly provided at one end of the top of the screening machine arm, and a corrugated arm platform and a fixed arm ring are fixedly provided at the bottom of the screening machine arm. A second conical tooth ring and a first conical tooth ring are fixedly provided in the middle of the screening machine arm.

[0007] In a preferred embodiment of a mortar preparation and screening machine for the reuse of building aggregates, the grinding disc assembly includes a conical grinding disc, a perforated inner platform is fixedly provided at the center of the conical grinding disc, and inner groove rollers are rotatably provided in multiple inner grooves opened on the edge of the conical grinding disc. A first auxiliary bevel gear is fixedly provided on the shaft at one end of the inner groove roller, and the perforated inner platform is rotatably provided on the outer wall of the outer shaft tube through a bearing.

[0008] In a preferred embodiment of a mortar preparation screening machine for the reuse of building aggregates, the screening roller assembly includes a central frame, the bottom of which is fixedly connected to an outer ring arm via a bracket, and a plurality of inclined screening rollers are rotatably arranged between the central frame and the outer ring arm. A second auxiliary bevel gear is fixedly arranged on the shaft at one end of each screening roller, and a screening gap is formed between two adjacent screening rollers. The central frame is fixedly arranged at the bottom of the inner shaft.

[0009] In a preferred embodiment of a mortar preparation and screening machine for the reuse of building aggregates, the material tray assembly includes a material screening tray, a grooved platform is fixedly provided at the center of the material screening tray, a square slide rod is slidably provided through the grooved platform, an abutment plate and a return spring are fixedly provided at the bottom of the square slide rod, a side arm with rollers is fixedly provided at the edge of the material screening tray, and the top of the square slide rod is fixedly provided at the bottom of the central frame.

[0010] In a preferred embodiment of a mortar preparation and screening machine for the reuse of building aggregates, the feeding assembly includes a feeding hopper, on which an inclined air pipe and a connecting arm are fixedly installed, and the top of the connecting arm is fixedly installed at the bottom of the screening machine arm.

[0011] In a preferred embodiment of a mortar preparation and screening machine for the reuse of building aggregates, the grinding disc assembly rotates below the forming frame via the rotation of the outer shaft tube, and the screening roller assembly rotates below the forming frame via the rotation of the inner shaft rod. The grinding disc assembly is rotatably positioned above the screening roller assembly, and an inclined building aggregate screening space is formed between the grinding disc assembly and the screening roller assembly with the spacing gradually approaching each other.

[0012] In a preferred embodiment of a mortar preparation screening machine for the reuse of building aggregates, when the grinding disc assembly rotates on the screening machine frame assembly, the first auxiliary bevel gear on the grinding disc assembly meshes and moves circumferentially on the second bevel gear ring, and when the screening roller assembly rotates on the screening machine frame assembly, the second auxiliary bevel gear on the screening roller assembly meshes and moves circumferentially on the first bevel gear ring.

[0013] In a preferred embodiment of a mortar preparation and screening machine for the reuse of building aggregates, the grooved platform slides up and down on a square slide bar, the top of the return spring abuts against the lower end surface of the grooved platform, and through the pushing of the return spring, the roller abuts against the lower end surface of the corrugated arm platform and moves in a circular motion on the lower end surface of the corrugated arm platform.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention, through the setting of the first bevel gear, the intermediate bevel gear and the second bevel gear, when the inner shaft rod drives the screening roller assembly to rotate, the outer shaft tube will drive the externally fixed grinding disc assembly to rotate in the opposite direction. That is, at this time, the grinding disc assembly and the screening roller assembly form a disc structure that rotates in opposite directions. In this way, the reverse rotation crushing of building aggregate between the grinding disc assembly and the screening roller assembly is realized.

[0015] 2. In this invention, the first auxiliary bevel gear on the grinding disc assembly meshes and moves circumferentially on the second bevel gear ring, and the second auxiliary bevel gear on the screening roller assembly meshes and moves circumferentially on the first bevel gear ring. Through the above-mentioned meshing and circumferential movement, the screening roller on the screening roller assembly will rotate accordingly. Since the screening roller is inclinedly set on the screening roller assembly, and a screening gap is formed between two adjacent screening rollers, the building aggregate between the grinding disc assembly and the screening roller assembly is conveyed downward while rotating downward, thus realizing downward roller screening.

[0016] 3. During the screening process, the present invention simultaneously achieves crushing. While the grinding disc assembly and the screening roller assembly rotate in opposite directions, the first auxiliary bevel gear meshes and moves in a circular motion on the second bevel gear ring, and the second auxiliary bevel gear meshes and moves in a circular motion on the first bevel gear ring. Through this meshing and circular motion design and the reverse rotation design, a secondary roller crushing structure with reverse rotation is formed between the inner groove roller and the screening roller. In this way, it is ensured that unqualified building aggregates are fully crushed during roller screening, and the phenomenon of material blockage during roller screening of building aggregates is avoided.

[0017] 4. The material conveyor assembly of the present invention rotates along with the rotation of the screening roller assembly. At this time, the building aggregate falling on the material conveyor assembly will be discharged in a rotating manner, that is, circumferentially conveyed and discharged into the discharge assembly. Through this conveying and discharge method, the accumulation of building aggregate is avoided. At the same time, when the material conveyor assembly of the present invention moves in a circular motion on the screening frame assembly, it forms an up-and-down vibrating discharge structure. Through this structure, the smoothness of circumferential conveying and discharge of material by the material conveyor assembly is achieved. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3This is an exploded view of the present invention; Figure 4 This is a perspective view of the screening frame assembly of the present invention; Figure 5 This is a perspective view of the grinding disc assembly of the present invention; Figure 6 This is a perspective view of the screening roller assembly of the present invention; Figure 7 This is a perspective view of the material tray assembly of the present invention; Figure 8 This is a perspective view of the feeding component of the present invention.

[0019] In the diagram: 100, screening frame assembly; 101, screening arm; 102, mounting arm; 103, inner shaft; 104, first bevel gear; 105, drive motor; 106, return frame; 107, intermediate bevel gear; 108, outer shaft tube; 109, second bevel gear; 110, fixed arm ring; 111, corrugated arm platform; 112, first bevel gear ring; 113, second bevel gear ring; 200, grinding disc assembly; 201, conical grinding disc; 202, perforated inner platform; 203, first auxiliary bevel gear; 2 04. Inner groove of the disc; 205. Inner groove roller; 300. Screening roller disc assembly; 301. Central support platform; 302. Outer ring arm; 303. Second auxiliary bevel gear; 304. Screening roller; 305. Screening gap; 400. Material tray assembly; 401. Material screening disc; 402. Side arm; 403. Roller; 404. Grooved platform; 405. Square slide bar; 406. Contact disc; 407. Return spring; 500. Discharge assembly; 501. Discharge hopper; 502. Inclined air duct; 503. Connecting arm. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8As shown, the present invention provides a mortar preparation screening machine for the reuse of building aggregates, including a screening frame assembly 100. The screening frame assembly 100 includes a screening arm 101, a rotating frame 106 fixedly mounted on the top of the screening arm 101, an inner shaft 103 with a first bevel gear 104 rotatably mounted on the top of the rotating frame 106, and a drive motor 105 for driving the inner shaft 103 to rotate fixedly mounted on the top of the rotating frame 106. An outer shaft tube 108 with a second bevel gear 109 rotatably mounted on the bottom of the rotating frame 106, and an intermediate bevel gear 107 rotatably mounted on one side of the rotating frame 106, meshing with the first bevel gear 104 and the second bevel gear 109. The inner shaft 101... The bottom of the screen roller assembly 300 is fixedly installed for screening building aggregates. The outer wall of the outer shaft tube 108 is fixedly installed for grinding disc assembly 200 for further crushing unqualified building aggregates. The bottom of the screen roller assembly 300 is fixedly installed for dispersing building aggregates. The bottom of the screen frame assembly 100 is fixedly installed for feeding building aggregates. The top end of the screen arm 101 is fixedly installed with an installation arm 102. The bottom of the screen arm 101 is fixedly installed with a corrugated arm platform 111 and a fixed arm ring 110. The middle of the screen arm 101 is fixedly installed with a second conical tooth ring 113 and a first conical tooth ring 112.

[0022] In a preferred embodiment, please refer to Figure 5 The grinding disc assembly 200 includes a conical grinding disc 201. A perforated inner platform 202 is fixedly provided at the center of the conical grinding disc 201. Inner groove rollers 205 are rotatably provided in multiple inner grooves 204 opened on the edge of the conical grinding disc 201. A first auxiliary bevel gear 203 is fixedly provided on the shaft at one end of the inner groove roller 205. The perforated inner platform 202 is rotatably provided on the outer wall of the outer shaft tube 108 through a bearing.

[0023] In this embodiment, the grinding disc assembly 200 rotates below the return frame 106 by the rotation of the outer shaft tube 108.

[0024] In a preferred embodiment, please refer to Figure 6 The screening roller assembly 300 includes a central frame 301. The bottom of the central frame 301 is fixedly connected to the outer ring arm 302 via a bracket. Multiple inclined screening rollers 304 are rotatably arranged between the central frame 301 and the outer ring arm 302. A second auxiliary bevel gear 303 is fixedly arranged on the shaft at one end of the screening roller 304. A screening gap 305 is formed between two adjacent screening rollers 304. The central frame 301 is fixedly arranged at the bottom of the inner shaft 103.

[0025] In this embodiment, the screening roller assembly 300 rotates below the return frame 106 by the rotation of the inner shaft 103, and the grinding disc assembly 200 is rotatably positioned above the screening roller assembly 300. An inclined screening space for building aggregates is formed between the grinding disc assembly 200 and the screening roller assembly 300, with the spacing gradually approaching each other.

[0026] Secondly, when the grinding disc assembly 200 rotates on the screening frame assembly 100, the first auxiliary bevel gear 203 on the grinding disc assembly 200 meshes and moves in a ring on the second bevel gear ring 113. When the screening roller assembly 300 rotates on the screening frame assembly 100, the second auxiliary bevel gear 303 on the screening roller assembly 300 meshes and moves in a ring on the first bevel gear ring 112.

[0027] In a preferred embodiment, please refer to Figure 7 The material conveyor assembly 400 includes a material conveyor screening disc 401. A grooved platform 404 is fixedly provided at the center of the material conveyor screening disc 401. A square slide rod 405 is slidably provided through the grooved platform 404. An abutment plate 406 and a return spring 407 are fixedly provided at the bottom of the square slide rod 405. A side arm 402 with rollers 403 is fixedly provided at the edge of the material conveyor screening disc 401. The top of the square slide rod 405 is fixedly provided at the bottom of the central frame 301.

[0028] In this embodiment, the grooved platform 404 slides up and down on the square slide bar 405, and the top of the return spring 407 abuts against the lower end surface of the grooved platform 404. Through the push of the return spring 407, the roller 403 abuts against the lower end surface of the wave-shaped arm platform 111 and moves around on the lower end surface of the wave-shaped arm platform 111.

[0029] In a preferred embodiment, please refer to Figure 8 The feeding assembly 500 includes a feeding hopper 501, on which an inclined air duct 502 and a connecting arm 503 are fixedly installed. The top of the connecting arm 503 is fixedly installed at the bottom of the screening machine arm 101.

[0030] In this embodiment, the inclined air duct 502 is connected to an external air supply device. At this time, the inclined air duct 502 will quickly blow the building aggregate downwards for wind-blown material guiding. At the same time, a negative pressure structure is formed at the top of the feeding assembly 500, which can prevent dust from escaping from the top structure of the screening frame assembly 100 during screening.

[0031] The working principle of this invention is as follows: When using this invention, the device is fixed at the reserved machine position by bolts and mounting arm 102. When feeding and screening building aggregates, the building aggregates are fed into the screening gap between the grinding disc assembly 200 and the screening roller assembly 300 by the conveyor belt. At this time, the drive motor 105 is started. The drive motor 105 drives the screening roller assembly 300 fixed at the bottom of the inner shaft 103 to rotate through the inner shaft 103. At this time, due to the setting of the first bevel gear 104, the middle bevel gear 107 and the second bevel gear 109, when the inner shaft 103 drives the screening roller assembly 300 to rotate, the outer shaft tube 108 will drive the externally fixed grinding disc assembly 200 to rotate in the opposite direction. That is, at this time, the grinding disc assembly 200 and the screening roller assembly 300 form a disc structure that rotates in opposite directions. In this way, the building aggregates between the grinding disc assembly 200 and the screening roller assembly 300 are crushed by reverse rotation.

[0032] Based on the above, when the grinding disc assembly 200 and the screening roller assembly 300 rotate in opposite directions on the screening frame assembly 100, the first auxiliary bevel gear 203 on the grinding disc assembly 200 meshes and moves in a ring on the second bevel ring 113, and the second auxiliary bevel gear 303 on the screening roller assembly 300 meshes and moves in a ring on the first bevel ring 112. Through the above meshing and moving in a ring, the screening roller 304 on the screening roller assembly 300 will rotate accordingly. Since the screening roller 304 is inclinedly arranged on the screening roller assembly 300, and a screening gap 305 is formed between two adjacent screening rollers 304, the building aggregate between the grinding disc assembly 200 and the screening roller assembly 300 is conveyed downward while achieving downward roller screening.

[0033] Based on the above, the unqualified building aggregates in the roller screen are crushed during the reverse rotation of the grinding disc assembly 200 and the screening roller assembly 300. That is, crushing is achieved simultaneously during the screening process. Since the grinding disc assembly 200 is equipped with an inner groove roller 205 and the screening roller assembly 300 is equipped with a screening roller 304, while the grinding disc assembly 200 and the screening roller assembly 300 are rotating in opposite directions, the first auxiliary bevel gear 203 meshes and moves circumferentially on the second bevel gear ring 113, and the second auxiliary bevel gear 303 meshes and moves circumferentially on the first bevel gear ring 112. Through this meshing and circumferential design and the reverse rotation design, a secondary roller crushing structure with reverse rotation is formed between the inner groove roller 205 and the screening roller 304. In this way, it is ensured that the unqualified building aggregates are fully crushed during roller screening, and the phenomenon of material blockage is avoided during the roller screening of building aggregates.

[0034] Based on the above, after the roller screen finishes, the construction aggregate falls onto the conveyor belt assembly 400. Since the conveyor belt assembly 400 is fixed to the bottom of the screening roller assembly 300, it rotates along with the screening roller assembly 300. The construction aggregate falling onto the conveyor belt assembly 400 is then discharged in a rotating manner, i.e., circumferentially conveyed and discharged into the discharge assembly 500. This conveying and discharging method avoids the accumulation of construction aggregate during conveying and discharging, thus facilitating... This facilitates subsequent mortar preparation and agitation. Simultaneously, the invention utilizes the push of the return spring 407 to cause the roller 403 to abut against the lower end face of the corrugated arm 111 and move circumferentially on the lower end face of the corrugated arm 111. Through this structure, when the material tray assembly 400 moves circumferentially on the screening frame assembly 100, the material screening disc 401 forms an up-and-down vibrating feeding structure on the square slide rod 405. This structure ensures smooth circumferential feeding and feeding of the material tray assembly 400.

[0035] Based on the above, if necessary, the inclined air duct 502 can be connected to the external air supply device during material feeding. At this time, the inclined air duct 502 will quickly blow the building aggregate downwards for wind-blown material guiding. At the same time, a negative pressure structure is formed at the top of the feeding component 500, which can prevent dust from escaping from the top structure of the screening frame component 100 during screening.

[0036] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mortar preparation screening machine for the reuse of building aggregates, comprising a screening machine frame assembly (100), characterized in that: The screening frame assembly (100) includes a screening arm (101), a rotating frame (106) is fixedly mounted on the top of the screening arm (101), an inner shaft (103) with a first bevel gear (104) is rotatably mounted on the top of the rotating frame (106), and a drive motor (105) for driving the inner shaft (103) to rotate is fixedly mounted on the top of the rotating frame (106). An outer shaft tube (108) with a second bevel gear (109) is rotatably mounted on the bottom of the rotating frame (106), and a part of the rotating frame (106) rotatably mounted on one side is connected to the first bevel gear (109). 104) and the intermediate bevel gear (107) meshing with the second bevel gear (109), the bottom of the inner shaft (103) is fixedly provided with a screening roller assembly (300) for screening building aggregates, the outer wall of the outer shaft tube (108) is fixedly provided with a grinding disc assembly (200) for further crushing unqualified building aggregates, the bottom of the screening roller assembly (300) is fixedly provided with a material conveying disc assembly (400) for dispersing building aggregates, and the bottom of the screening frame assembly (100) is fixedly provided with a feeding assembly (500) for feeding building aggregates.

2. The mortar preparation and screening machine for the reuse of building aggregates according to claim 1, characterized in that: The screening arm (101) has a mounting arm (102) fixedly installed at one end of its top, and a wave-shaped arm platform (111) and a fixed arm ring (110) fixedly installed at the bottom of its bottom. The screening arm (101) also has a second bevel ring (113) and a first bevel ring (112) fixedly installed in the middle.

3. The mortar preparation and screening machine for the reuse of building aggregates according to claim 1, characterized in that: The grinding disc assembly (200) includes a conical grinding disc (201), a perforated inner platform (202) is fixedly provided at the center of the conical grinding disc (201), and an inner groove roller (205) is rotatably provided in a plurality of inner grooves (204) opened on the edge of the conical grinding disc (201). A first auxiliary bevel gear (203) is fixedly provided on the shaft at one end of the inner groove roller (205). The perforated inner platform (202) is rotatably provided on the outer wall of the outer shaft tube (108) through a bearing.

4. A mortar preparation and screening machine for the reuse of building aggregates according to claim 1, characterized in that: The screening roller assembly (300) includes a central frame (301), the bottom of which is fixedly connected to the outer ring arm (302) via a bracket. A plurality of inclined screening rollers (304) are rotatably arranged between the central frame (301) and the outer ring arm (302). A second auxiliary bevel gear (303) is fixedly arranged on the shaft at one end of the screening roller (304). A screening gap (305) is formed between two adjacent screening rollers (304). The central frame (301) is fixedly arranged at the bottom of the inner shaft (103).

5. A mortar preparation and screening machine for the reuse of building aggregates according to claim 1, characterized in that: The material conveyor assembly (400) includes a material conveyor screening disc (401), a grooved platform (404) is fixedly provided at the center of the material conveyor screening disc (401), a square slide rod (405) is slidably provided through the grooved platform (404), a contact plate (406) and a return spring (407) are fixedly provided at the bottom of the square slide rod (405), a side arm (402) with rollers (403) is fixedly provided at the edge of the material conveyor screening disc (401), and the top of the square slide rod (405) is fixedly provided at the bottom of the central support platform (301).

6. A mortar preparation and screening machine for the reuse of building aggregates according to claim 1, characterized in that: The feeding assembly (500) includes a feeding hopper (501), on which an inclined air duct (502) and a connecting arm (503) are fixedly installed. The top of the connecting arm (503) is fixedly installed at the bottom of the screening machine arm (101).

7. A mortar preparation and screening machine for the reuse of building aggregates according to claim 1, characterized in that: The grinding disc assembly (200) rotates below the return frame (106) by the rotation of the outer shaft tube (108), and the screening roller assembly (300) rotates below the return frame (106) by the rotation of the inner shaft rod (103). The grinding disc assembly (200) is rotatably positioned above the screening roller assembly (300). An inclined and gradually approaching building aggregate screening space is formed between the grinding disc assembly (200) and the screening roller assembly (300).

8. A mortar preparation and screening machine for the reuse of building aggregates according to claim 1, characterized in that: When the grinding disc assembly (200) rotates on the screening frame assembly (100), the first auxiliary bevel gear (203) on the grinding disc assembly (200) meshes and moves in a ring on the second bevel gear ring (113). When the screening roller assembly (300) rotates on the screening frame assembly (100), the second auxiliary bevel gear (303) on the screening roller assembly (300) meshes and moves in a ring on the first bevel gear ring (112).

9. A mortar preparation and screening machine for the reuse of building aggregates according to claim 5, characterized in that: The grooved platform (404) slides up and down on the square slide bar (405), and the top of the return spring (407) abuts against the lower end surface of the grooved platform (404). Through the push of the return spring (407), the roller (403) abuts against the lower end surface of the wave-shaped arm platform (111) and moves around on the lower end surface of the wave-shaped arm platform (111).

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