High-strength self-sealing cement concrete machine-made sand production device
By setting up a grinding mechanism in the machine sand production device, the crushed machine sand material is rolled and grinded, the problem of poor shape of the machine sand particles is solved, and the high-strength self-secretion performance of the concrete is significantly improved.
Patent Information
- Application Number
- CN202421543535.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In the existing machine sand production equipment, the grain shape of the machine sand is not good, the needle sheet shape is too many, the grain morphology is sharp, and there is no need for the roundness of natural sand, which seriously affects the high-strength self-secretion performance of concrete.
A grinding mechanism is arranged below the crushing mechanism, and the crushed machine sand material is rolled and polished by the rotation of the round table-shaped grinding disc to make its particle morphology become round.
Through grinding, the grain-shaped roundness of the machined sand is improved, thereby improving the high-strength self-secreting properties of concrete.
Smart Images
Figure CN222872289U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of machine-made sand production equipment, in particular to a high-strength self-compacting cement concrete machine-made sand production device. Background Art
[0002] High-strength self-compacting cement concrete is a self-flowing, self-compacting, high-strength, non-shrinkage type cement concrete made of cement as the base binder, machine-made sand as the aggregate, and supplemented with high-flow, micro-expansion, anti-segregation and other materials. Among them, self-compacting refers to good fluidity, no water seepage, no segregation, no need for vibration, and can rely on its own weight to fill. The performance of self-compacting is related to the particle shape of machine-made sand, while high strength refers to high strength, which is related to the performance of self-compacting.
[0003] In the existing machine-made sand production equipment, most of the machine-made sand produced by extrusion and crushing has poor particle shape, too many needle-like particles, sharp edges and corners, and lacks the roundness of natural sand. Its defects seriously affect the high-strength self-compacting properties of concrete.
[0004] Based on the deficiencies in the prior art, the utility model discloses a high-strength self-compacting cement concrete machine-made sand production device. A grinding mechanism is arranged below the crushing mechanism. As the frustum-shaped grinding disk in the grinding mechanism rotates, the particle morphology and edges of the crushed machine-made sand material can be rolled and polished, so that the particle shape of the machine-made sand tends to be rounded, thereby improving the high-strength self-compacting performance of the concrete when the machine-made sand is in use. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a high-strength self-compacting cement concrete machine-made sand production device to solve the technical problems raised in the background technology.
[0006] The utility model provides the following technical solutions:
[0007] A high-strength self-compacting cement concrete machine-made sand production device comprises a sand making box body, wherein a crushing mechanism and a grinding mechanism are sequentially arranged inside the sand making box body from top to bottom, wherein a driving mechanism for driving the crushing mechanism and the grinding mechanism is arranged at the upper end of the sand making box body, wherein the grinding mechanism comprises a grinding seat and a truncated cone-shaped grinding disc, wherein the outer ring of the grinding seat is connected to the inner wall of the sand making box body, wherein a truncated cone-shaped opening penetrating from top to bottom is coaxially arranged in the middle part of the grinding seat, wherein the truncated cone-shaped grinding disc is coaxially arranged inside the truncated cone-shaped opening, and an annular grinding gap is formed between the outer side surface of the truncated cone-shaped grinding disc and the inner wall of the truncated cone-shaped opening.
[0008] Preferably, an upper hopper is provided on one side of the upper end surface of the sand making box.
[0009] Preferably, a plurality of first polishing protrusion groups are sequentially arranged on the inner wall of the truncated cone-shaped opening along its axial direction, each of the first polishing protrusion groups includes a plurality of first polishing protrusions, and the plurality of first polishing protrusions are sequentially arranged along the circumference of the inner wall of the truncated cone-shaped opening; a plurality of second polishing protrusion groups matching the first polishing protrusion groups are sequentially arranged on the outer side surface of the truncated cone-shaped grinding disk along its axial direction, each of the second polishing protrusion groups includes a plurality of second polishing protrusions, and the plurality of second polishing protrusions are sequentially arranged along the circumference of the outer side surface of the truncated cone-shaped grinding disk.
[0010] Preferably, the crushing mechanism includes a crushing seat and a crushing head, the outer ring of the crushing seat is connected to the inner wall of the sand making box, the middle part of the crushing seat is coaxially provided with an inverted truncated cone opening penetrating up and down, the crushing head is coaxially arranged inside the inverted truncated cone opening, and an annular crushing gap is formed between the outer side surface of the crushing head and the inner wall of the inverted truncated cone opening.
[0011] Preferably, a plurality of first crushing tooth rings are sequentially arranged on the inner wall of the inverted truncated cone-shaped opening along its axial direction; the crushing head is cylindrical, and a plurality of second crushing tooth rings matching the first crushing tooth rings are sequentially arranged on the outer surface of the crushing head along its axial direction.
[0012] Preferably, the driving mechanism includes a driving shaft, the crushing head and the conical grinding disc are coaxially connected to the driving shaft in sequence, the upper end of the driving shaft is connected to the upper end surface of the sand making box body through a bearing, and the upper end surface of the sand making box body is also provided with a motor coaxially connected to the upper end of the driving shaft.
[0013] Preferably, a support frame is also provided inside the sand making box body below the grinding mechanism, and the support frame includes a horizontally arranged outer ring seat, the outer side surface of the outer ring seat is coaxially connected to the inner wall of the sand making box body, the inner ring of the outer ring seat is coaxially provided with an inner ring plate, the lower end of the drive shaft is coaxially connected to the inner ring plate through a bearing, the inner ring plate and the outer ring seat are connected by a plurality of connecting rods, and an annular discharge port is also formed between the inner ring plate and the outer ring seat.
[0014] Preferably, a screening mechanism is further provided inside the sand making box below the support frame, and the screening mechanism includes a first screening net, a second screening net and a guide plate which are arranged in sequence from top to bottom, and the first screening net, the second screening net and the guide plate are all arranged at a certain angle, and a large particle size discharge port is provided on the side of the sand making box at the lower end of the first screening net, a qualified particle size discharge port is provided on the side of the sand making box at the lower end of the second screening net, and a small particle size discharge port is provided on the side of the sand making box at the lower end of the guide plate.
[0015] Preferably, the upper end surface of the sand making box body is also provided with a return port, and a bucket elevator is also provided at the large particle size discharge port, the feed end of the bucket elevator is connected to the large particle size discharge port, and the discharge end of the bucket elevator is connected to the return port.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] The utility model discloses a high-strength self-compacting cement concrete machine-made sand production device. A grinding mechanism is arranged below a crushing mechanism. As a frustum-shaped grinding disc in the grinding mechanism rotates, the particle morphology corners of the crushed machine-made sand material can be rolled and ground, so that the particle shape of the machine-made sand tends to be rounded, thereby improving the high-strength self-compacting performance of the concrete when the machine-made sand is in use. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] Figure 2 It is a schematic diagram of the grinding mechanism structure of the utility model.
[0021] Figure 3 This is a schematic diagram of the support frame structure of the utility model. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0024] See also Figure 1-3 As shown, a high-strength self-compacting cement concrete machine-made sand production device includes a sand making box 1, wherein a crushing mechanism and a grinding mechanism 3 are sequentially arranged inside the sand making box 1 from top to bottom, and a driving mechanism for driving the crushing mechanism and the grinding mechanism 3 is arranged at the upper end of the sand making box 1, and the grinding mechanism 3 includes a grinding seat 31 and a truncated cone-shaped grinding disc 33, the outer ring of the grinding seat 31 is connected to the inner wall of the sand making box 1, and a truncated cone-shaped opening 32 penetrating from top to bottom is coaxially arranged in the middle part of the grinding seat 31, and the truncated cone-shaped grinding disc 33 is coaxially arranged inside the truncated cone-shaped opening 32, and an annular grinding gap is formed between the outer side surface of the truncated cone-shaped grinding disc 33 and the inner wall of the truncated cone-shaped opening 32. By arranging a grinding mechanism below the crushing mechanism, the truncated cone-shaped grinding disc in the grinding mechanism can roll and grind the edges and corners of the particle morphology of the crushed machine-made sand material as it rotates, making the particle shape of the machine-made sand tend to be rounded, thereby improving the high-strength self-compacting performance of the concrete when the machine-made sand is used.
[0025] An upper hopper 10 is provided on one side of the upper end surface of the sand making box 1.
[0026] A plurality of first grinding protrusion groups are sequentially arranged on the inner wall of the truncated cone-shaped opening 32 along the axial direction thereof, each of the first grinding protrusion groups includes a plurality of first grinding protrusions 34, and the plurality of first grinding protrusions 34 are sequentially arranged along the circumference of the inner wall of the truncated cone-shaped opening 32; a plurality of second grinding protrusion groups matching the first grinding protrusion groups are sequentially arranged on the outer side of the truncated cone-shaped grinding disc 33 along the axial direction thereof, each of the second grinding protrusion groups includes a plurality of second grinding protrusions 35, and the plurality of second grinding protrusions 35 are sequentially arranged along the circumference of the outer side of the truncated cone-shaped grinding disc 33. The first grinding protrusions 34 and the second grinding protrusions 35 are staggered and distributed with each other, and the mutual cooperation between the first grinding protrusions 34 and the second grinding protrusions 35 can further improve the grinding effect of the machine-made sand material, and make the grain shape of the machine-made sand tend to be rounded.
[0027] The crushing mechanism includes a crushing seat 21 and a crushing head 23, the outer ring of the crushing seat 21 is connected to the inner wall of the sand making box 1, the middle of the crushing seat 21 is coaxially provided with an inverted truncated cone-shaped opening 22 that penetrates from top to bottom, the crushing head 23 is coaxially arranged inside the inverted truncated cone-shaped opening 22, and an annular crushing gap is formed between the outer side surface of the crushing head 23 and the inner wall of the inverted truncated cone-shaped opening 22. The machine-made sand material enters the crushing gap and is crushed as the crushing head 23 rotates.
[0028] A plurality of first crushing tooth rings 24 are sequentially arranged on the inner wall of the inverted truncated cone-shaped opening 22 along its axial direction; the crushing head 23 is cylindrical, and a plurality of second crushing tooth rings 25 matching the first crushing tooth rings 24 are sequentially arranged on the outer surface of the crushing head 23 along its axial direction. The cylindrical crushing head 23 can make the upper end opening of the crushing gap larger, which is convenient for the entry of machine-made sand materials.
[0029] The driving mechanism includes a driving shaft 51, the crushing head 23 and the truncated cone-shaped grinding disc 33 are coaxially connected to the driving shaft 51 in sequence, the upper end of the driving shaft 51 is connected to the upper end surface of the sand making box 1 through a bearing, and the upper end surface of the sand making box 1 is also provided with a motor 52 coaxially connected to the upper end of the driving shaft 51. The operation of the motor 52 can drive the rotation of the driving shaft 51, and then drive the rotation of the crushing head 23 and the truncated cone-shaped grinding disc 33.
[0030] The interior of the sand making box 1 is located below the grinding mechanism and is further provided with a support frame 12, which includes a horizontally arranged outer ring seat 121, the outer side surface of the outer ring seat 121 is coaxially connected to the inner wall of the sand making box 1, the inner ring of the outer ring seat 121 is coaxially provided with an inner ring plate 122, the lower end of the drive shaft 51 is coaxially connected to the inner ring plate 122 through a bearing, the inner ring plate 122 and the outer ring seat 121 are connected through a plurality of connecting rods 123, and an annular discharge port 124 is also formed between the inner ring plate 122 and the outer ring seat 121. The provision of the support frame 12 can further improve the stability of the drive shaft 51 during rotation, thereby improving the effect of crushing and grinding.
[0031] The interior of the sand making box 1 is located below the support frame 12 and is also provided with a screening mechanism, which includes a first screening net 41, a second screening net 42 and a guide plate 43 arranged in sequence from top to bottom, the first screening net 41, the second screening net 42 and the guide plate 43 are all arranged at a certain angle, and the side of the sand making box 1 is provided with a large particle size discharge port 6 at the lower end of the first screening net 41, the side of the sand making box 1 is provided with a qualified particle size discharge port 7 at the lower end of the second screening net 42, and the side of the sand making box 1 is provided with a small particle size discharge port 8 at the lower end of the guide plate 43. The machine-made sand will cause the sand making box 1 to vibrate to a certain extent during the crushing and grinding process, so there is no need to set a vibration motor here to facilitate screening.
[0032] The upper end surface of the sand making box 1 is also provided with a return port 11, and the large particle size discharge port 6 is also provided with a bucket elevator 9, the feed end of the bucket elevator 9 is connected with the large particle size discharge port 6, and the discharge end of the bucket elevator 9 is connected with the return port 11. The large particle size machine-made sand that does not meet the specifications enters the bucket elevator 9 through the large particle size discharge port 6, and finally enters the upper end of the sand making box 1 through the return port 11 and falls into the crushing mechanism for heavy crushing. The machine-made sand with a particle size that meets the specifications is discharged through the qualified particle size discharge port 7 for collection, and the small particle size machine-made sand and powdered machine-made sand that do not meet the specifications are collected through the small particle size discharge port 8.
[0033] The above is only a preferred implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A high-strength self-compacting cement concrete machine-made sand production device, comprising a sand making box (1), characterized in that: A crushing mechanism and a grinding mechanism (3) are arranged in sequence from top to bottom inside the sand making box (1); a driving mechanism for driving the crushing mechanism and the grinding mechanism (3) is arranged at the upper end of the sand making box (1); the grinding mechanism (3) comprises a grinding seat (31) and a truncated cone-shaped grinding disc (33); the outer ring of the grinding seat (31) is connected to the inner wall of the sand making box (1); a truncated cone-shaped opening (32) penetrating from top to bottom is coaxially arranged in the middle of the grinding seat (31); the truncated cone-shaped grinding disc (33) is coaxially arranged inside the truncated cone-shaped opening (32); an annular grinding gap is formed between the outer side surface of the truncated cone-shaped grinding disc (33) and the inner wall of the truncated cone-shaped opening (32).
2. According to claim 1, a high-strength self-compacting cement concrete machine-made sand production device is characterized in that: A plurality of first grinding protrusion groups are sequentially arranged on the inner wall of the truncated cone-shaped opening (32) along its axial direction, each of the first grinding protrusion groups comprising a plurality of first grinding protrusions (34), and the plurality of first grinding protrusions (34) are sequentially arranged along the circumference of the inner wall of the truncated cone-shaped opening (32).
3. According to claim 2, a high-strength self-compacting cement concrete machine-made sand production device is characterized in that: A plurality of second grinding protrusion groups cooperating with the first grinding protrusion groups are sequentially arranged on the outer side surface of the truncated cone-shaped grinding disc (33) along its axial direction, each of the second grinding protrusion groups comprising a plurality of second grinding protrusions (35), and the plurality of second grinding protrusions (35) are sequentially arranged along the circumference of the outer side surface of the truncated cone-shaped grinding disc (33).
4. The high-strength self-compacting cement concrete machine-made sand production device according to claim 3, characterized in that: The crushing mechanism comprises a crushing seat (21) and a crushing head (23); the outer ring of the crushing seat (21) is connected to the inner wall of the sand making box (1); a middle part of the crushing seat (21) is coaxially provided with an inverted truncated cone-shaped opening (22) penetrating vertically; the crushing head (23) is coaxially arranged inside the inverted truncated cone-shaped opening (22); an annular crushing gap is formed between the outer side surface of the crushing head (23) and the inner wall of the inverted truncated cone-shaped opening (22).
5. The high-strength self-compacting cement concrete machine-made sand production device according to claim 4, characterized in that: A plurality of first crushing tooth rings (24) are sequentially arranged on the inner wall of the inverted truncated cone-shaped opening (22) along the axial direction thereof.
6. The high-strength self-compacting cement concrete machine-made sand production device according to claim 5, characterized in that: The crushing head (23) is cylindrical, and a plurality of second crushing tooth rings (25) matching with the first crushing tooth rings (24) are sequentially arranged on the outer surface of the crushing head (23) along the axial direction thereof.
7. A high-strength self-compacting cement concrete machine-made sand production device according to claim 6, characterized in that: The driving mechanism comprises a driving shaft (51), the crushing head (23) and the frustoconical grinding disc (33) are coaxially connected to the driving shaft (51) in sequence, the upper end of the driving shaft (51) is connected to the upper end surface of the sand making box (1) via a bearing, and the upper end surface of the sand making box (1) is also provided with a motor (52) coaxially connected to the upper end of the driving shaft (51).