Sand making production line for mineral sand making

Abstract

The invention relates to a sand making production line for mineral sand making in the field of sand making equipment, and the sand making production line comprises a screening and feeding module, the screening and feeding module communicates with a crushing module, and the crushing module communicates with a finish machining module.The screening and feeding module and the crushing module are effectively combined in space, so that the space occupied by the sand making production line is reduced; crushed raw materials are subjected to three-layer screening and fed into the crushers of different specifications to be crushed, the crushing efficiency of the crushers is improved, the situation that the crushing effect of the crushers is poor due to the fact that the sizes are not consistent is avoided, and meanwhile crushed finished products crushed by the two crushers on the upper side can be repeatedly screened; and screened finished products collected by reinforcing ribs on the screening and feeding module located on the lowest side and crushed finished products of the crusher located on the lowest side are conveyed to the finish machining module, the crushing effect is improved, the space distance of screening and crushing equipment is reduced, the cost of a dust suppression device is reduced, and the sand making cost is further reduced.

Description

Technical Field

[0001] The invention relates to a sand making production line, in particular to a sand making production line used for mineral sand making and applied in the field of sand making equipment. Background Art

[0002] Mineral sand making is a process of crushing and screening ore into sands of different particle sizes. This process is widely used in construction, roads, railways and other infrastructure construction. First, the ore passes through the primary crushing equipment. Then, these stones enter the secondary crushing equipment, such as cone crusher or impact crusher. The crushed material is screened by a vibrating screen, and sands of different particle sizes are separated. The screened sand can be used for concrete preparation, asphalt mixture or as construction sand according to its particle size and purpose.

[0003] The invention patent CN201910451965.5 specification discloses a dry sand making production line and a dry sand making process, which screens the raw stone, crushes the stone with a particle size greater than 100 mm for the first time, mixes the stone with a particle size less than 100 mm with the stone after the first crushing, and then crushes the stone for a second time. The stone after the second crushing is screened, and the sand particles that meet the particle size of the finished sand are dried and de-powdered, and the stone larger than the particle size of the finished sand is crushed and made into sand, and then the sand particles after crushing and sand making are screened, and the sand particles with a particle size larger than the particle size of the finished sand are repeatedly crushed and made into sand. By screening the stone, the sand particles that meet the particle size of the finished sand are screened out, thereby avoiding excessive crushing of the sand particles and causing waste of raw materials, improving production efficiency, reducing the crushing value of the sand particles, and improving the quality of the finished sand.

[0004] The invention patent CN202210312612.9 specification discloses a machine-made sand production line and production process, which realizes the production of machine-made sand by screening the initial stone, then conveying the screened stone to the first crusher for crushing, and then conveying the crushed stone to the second crusher for crushing, and finally screening the crushed stone to obtain sand particles.

[0005] In the prior art, in the process of mineral sand making, the raw materials usually need to be screened and crushed multiple times to meet production needs. This results in a large amount of space being occupied by the screening and crushing equipment during the sand making process. At the same time, once the screening and crushing equipment are spaced apart, it is often necessary to build a dust suppression device to further increase the cost of sand making. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that in the process of mineral sand making, once the screening and crushing equipment are spaced apart, it is often necessary to construct a dust suppression device, which further increases the cost of sand making.

[0007] In order to solve the above problems, the present invention provides a sand production line for mineral sand making, comprising a screening and feeding module, the screening and feeding module is connected to a crushing module, and the crushing module is connected to a finishing module;

[0008] The crushing module includes a working frame, on which a plurality of crushers are fixedly connected, and the crushing objects of the plurality of crushers decrease from top to bottom. One side of the working frame is provided with a plurality of screening and feeding devices which are respectively matched with the working frame, and a transition device is provided between two adjacent screening and feeding devices. The screening and feeding device includes an outer frame, in which a plurality of transmission rollers are rotatably connected, and the gaps between the transmission rollers in the plurality of screening and feeding devices decrease from top to bottom. A transmission plate whose size matches that of the outer frame is fixedly connected at the lower end of the outer frame, and a plurality of reinforcing ribs are fixedly connected at the lower end of the transmission plate.

[0009] In the above-mentioned sand making production line for mineral sand making, the space occupied by the sand making production line is reduced by effectively combining the screening and feeding device and the crushing module in space. The crushed raw materials are screened through three layers and then sent to crushers of different specifications for crushing, thereby improving the crushing efficiency of the crusher and avoiding poor crushing effect of the crusher due to size incompatibility.

[0010] As a further improvement of the present application, an elastic outer covering layer is sleeved on the outer side of the transmission roller, and the elastic outer covering layer is a hollow structure. The elastic outer covering layer is filled with a plurality of filling units, and the plurality of filling units are elastic materials of irregular shapes with different volumes, and the plurality of filling units completely fill the hollow structure of the elastic outer covering layer. When a crushing object is clamped between two adjacent elastic outer covering layers and causes a jam, the elastic outer covering layer filled with the plurality of filling units can emit a greater elastic deformation, so that the elastic outer covering layer is not easily stuck and is not easily affected in the conveying of the crushing object.

[0011] As a further improvement of the present application, the elastic outer covering cavity is filled with liquid water, and the volume of the liquid water is less than 0.5% of the elastic outer covering cavity, thereby reducing the friction between adjacent filling units during the rotation of the elastic outer covering, making it less likely for the elastic outer covering to be excessively deformed due to excessive grinding of multiple filling units, thereby extending the life of the elastic outer covering.

[0012] As a further improvement of the present application, a reinforcing net is provided inside the elastic outer covering, and the reinforcing net is woven from wear-resistant material. On the one hand, after the elastic outer covering is worn and the reinforcing net is exposed, the reinforcing net can effectively protect the elastic outer covering to avoid excessive wear of the elastic outer covering, and it is not easy to affect the screening effect of the screening feeding module. On the other hand, during daily maintenance, once the reinforcing net is found to be exposed, the elastic outer covering needs to be replaced to ensure normal use.

[0013] As another improvement of the present application, the transition device includes an outer shell, which is made of elastic material. A plurality of buffer piles are inserted at one end of the outer shell. The buffer piles of two adjacent layers are staggered. The end of the buffer pile close to the outer shell passes through the outer shell wall and contacts the opposite inner wall of the outer shell. The buffer piles are inserted obliquely. The plurality of buffer piles are used to slow down the falling crushed materials so that the speed of the falling crushed materials will not be too fast. The obliquely inserted buffer piles can effectively reduce the impact of the falling crushed materials on the buffer piles, thereby reducing the possibility of damage to the buffer piles.

[0014] As another improvement supplement of the present application, a plurality of prefabricated grooves are excavated on the buffer pile, and the depth of the plurality of prefabricated grooves decreases with increasing distance from the inner wall of the outer shell with which they are in contact. By excavating the prefabricated grooves, the buffer pile is broken in advance before there is a risk of bending due to impact by the crushed raw materials, and then the buffer pile moves under its own weight to fit the inner wall of the outer shell again, thereby reducing the impact on the deceleration of the crushed raw materials.

[0015] As another improved supplement of the present application, a tension spring is fixedly connected between one end of the buffer pile located on the outside of the shell and the outer wall of the shell, and the tension spring is sleeved on the outside of the buffer pile. After the buffer pile breaks, it can assist the remaining buffer pile to move up.

[0016] As another improvement of the present application, multiple crushers are arranged horizontally, the crushing objects of the multiple crushers decrease from top to bottom, multiple screening and feeding devices are arranged horizontally, and the positions of the multiple screening and feeding devices match the crushers, and multiple transmission plates extend from one end away from the crusher to the adjacent screening and feeding device.

[0017] In summary, in the present application, the space occupied by the sand making production line is reduced by effectively combining the screening and feeding device and the crushing module in space, and the crushed raw materials are screened through three layers and sent to crushers of different specifications for crushing, thereby improving the crushing efficiency of the crusher and avoiding poor crushing effect of the crusher due to size mismatch. At the same time, the crushed products crushed by the two upper crushers will be screened repeatedly, and the screened products collected by the reinforced ribs on the screening and feeding device at the bottom and the crushed products of the crusher at the bottom are transported to the finishing module to increase the crushing effect.

[0018] At the same time, the horizontal design of multiple crushers and screening feeding devices in the same plane makes the overall structure more stable, and it is not easy to cause unstable center of gravity due to the excessive height of the device, and it is not easy to have tipping accidents, which reduces the construction cost. At the same time, the compact structure of crushers and screening feeding devices can also reduce the dust suppression cost to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a screening and feeding module and a crushing module of a sand making production line according to a first embodiment of the present application;

[0020] Figure 2 This is a flow chart of a sand making production line according to the first embodiment of the present application;

[0021] Figure 3 This is a schematic structural diagram of a screening and feeding device according to a first embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of a conveying roller according to a first embodiment of the present application;

[0023] Figure 5 This is a front cross-sectional view of the conveying roller of the first embodiment of the present application;

[0024] Figure 6 for Figure 5 The structural diagram at A in the middle;

[0025] Figure 7 This is a schematic diagram of the structure of the transition device of the first embodiment of the present application;

[0026] Figure 8 A top view of a transition device according to a first embodiment of the present application;

[0027] Fig. 9 This is a schematic structural diagram of a buffer pile according to a first embodiment of the present application;

[0028] Fig.10 This is a schematic diagram of the screening and feeding module and the crushing module of the sand making production line according to the first embodiment of the present application.

[0029] Description of the numbers in the figure:

[0030] 1 working frame, 2 crusher, 3 screening feeding device, 301 outer frame, 302 driving roller, 303 elastic outer covering layer, 304 filling unit, 305 reinforcing net, 306 driving plate, 307 reinforcing rib, 4 transition device, 401 shell, 402 buffer pile, 403 prefabricated groove, 404 tension spring. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 2 A sand production line for mineral sand production is shown, comprising a screening and feeding module, the screening and feeding module is connected to a crushing module, and the crushing module is connected to a finishing module;

[0034] See also Figure 1 and Figure 3-4The crushing module includes a working frame 1, on which a plurality of crushers 2 are fixedly connected, and the crushing objects of the plurality of crushers 2 decrease from top to bottom. A plurality of screening and feeding devices 3 are provided on one side of the working frame 1, and the positions thereof are matched with the working frame 1 respectively. A transition device 4 is provided between two adjacent screening and feeding devices 3. The screening and feeding device 3 includes an outer frame 301, and a plurality of transmission rollers 302 are rotatably connected in the outer frame 301. The gaps between the transmission rollers 302 in the plurality of screening and feeding devices 3 decrease from top to bottom. A transmission plate 306 having a size matched with the outer frame 301 is fixedly connected at the lower end thereof, and a plurality of reinforcing ribs 307 are fixedly connected at the lower end of the transmission plate 306.

[0035] In the present application, the sand-making raw materials are transported to the crusher 2 through the screening and feeding device 3 on the uppermost side. During the transmission process of the screening and feeding device 3, the size of the raw materials is screened by using the transmission rollers 302 with preset gaps. When the size of the raw materials is too small, they will leak out from the gaps between the transmission rollers 302 and fall onto the screening and feeding device 3 located on the lower side under the guidance of the transmission plate 306. During the falling process, due to the action of the transition device 4, the descending speed of the raw materials will be slowed down to prevent the raw materials from bouncing up and flying off the screening and feeding device 3. The crushed products produced by the two crushers 2 on the upper side are returned to the screening and feeding device 3 on the uppermost side for repeated screening. The screened products collected by the transmission plate 306 on the screening and feeding device 3 on the lower side and the crushed products of the crusher 2 on the lower side are transported to the finishing module for finishing processing.

[0036] In the present application, the space occupied by the sand making production line is reduced by effectively combining the screening and feeding module and the crushing module in space. The crushed raw materials are screened through three layers and sent to crushers 2 of different specifications for crushing, thereby improving the crushing efficiency of the crusher 2 and avoiding poor crushing effect of the crusher 2 due to size mismatch. At the same time, the crushed products crushed by the two upper crushers 2 will be screened repeatedly, and the screened products collected by the reinforcement ribs 307 on the screening and feeding device 3 located at the bottom and the crushed products of the crusher 2 at the bottom are transported to the finishing module to increase the crushing effect.

[0037] In particular, the normal use of multiple screening and feeding devices 3 and transition devices 4 in the present application requires the construction of corresponding racks to ensure normal use, which is a well-known technology for those skilled in the art and is therefore not disclosed in detail in the present application.

[0038] See also Figure 3-6An elastic outer covering layer 303 is sleeved on the outer side of the driving roller 302. The elastic outer covering layer 303 is a hollow structure. A plurality of filling units 304 are filled in the elastic outer covering layer 303. The plurality of filling units 304 are elastic materials of irregular shapes with different volumes. The plurality of filling units 304 completely fill the hollow structure of the elastic outer covering layer 303. When a crushing object is clamped between two adjacent elastic outer covering layers 303 and causes a jam, the elastic outer covering layer 303 filled with the plurality of filling units 304 can emit a larger elastic deformation, so that the elastic outer covering layer 303 is not easy to get stuck and is not easy to affect the conveying work of the crushing object.

[0039] The cavity of the elastic outer covering 303 is filled with liquid water, and the volume of the liquid water is 0.5% of the cavity of the elastic outer covering 303, which reduces the friction between adjacent filling units 304 during the rotation of the elastic outer covering 303, making it difficult for the elastic outer covering 303 to be excessively deformed due to excessive grinding of multiple filling units 304, thereby extending the life of the elastic outer covering 303.

[0040] A reinforcing net 305 is provided inside the elastic outer covering 303. The reinforcing net 305 is woven from wear-resistant material. On the one hand, when the elastic outer covering 303 is worn and leaks out of the reinforcing net 305, the reinforcing net 305 can effectively protect the elastic outer covering 303 to avoid excessive wear of the elastic outer covering 303, and it is not easy to affect the screening effect of the screening feeding device 3. On the other hand, during daily maintenance, once the reinforcing net 305 is found to be exposed, the elastic outer covering 303 needs to be replaced to ensure normal use.

[0041] See also Figure 7-9 The transition device 4 includes an outer shell 401, which is made of elastic material. A plurality of buffer piles 402 are inserted at one end of the outer shell 401. The buffer piles 402 of two adjacent layers are staggered. The end of the buffer pile 402 close to the outer shell 401 penetrates the wall of the outer shell 401 and contacts the inner wall of the opposite outer shell 401. The buffer piles 402 are obliquely inserted. The plurality of buffer piles 402 are used to decelerate the falling crushed raw materials so that the falling speed of the crushed raw materials will not be too fast. The obliquely inserted buffer piles 402 can effectively reduce the impact of the falling crushed raw materials on the buffer piles 402, thereby reducing the possibility of damage to the buffer piles 402.

[0042] A plurality of prefabricated grooves 403 are excavated on the buffer pile 402, and the depth of the plurality of prefabricated grooves 403 decreases as the distance from the inner wall of the outer shell 401 increases. By excavating the prefabricated grooves 403, the buffer pile 402 breaks in advance before it is hit by the crushed raw materials and has the risk of bending, and then the buffer pile 402 moves under its own weight to fit the inner wall of the outer shell 401 again, thereby reducing the impact on the deceleration of the crushed raw materials.

[0043] A tension spring 404 is fixedly connected between one end of the buffer pile 402 located outside the shell 401 and the outer wall of the shell 401, and the tension spring 404 is sleeved on the outside of the buffer pile 402. After the buffer pile 402 breaks, it can assist the remaining buffer pile 402 to move up.

[0044] The second implementation method:

[0045] Fig.10 A sand making production line for mineral sand making is shown, in which a plurality of crushers 2 are arranged horizontally, and the crushing objects of the plurality of crushers 2 decrease successively from top to bottom, a plurality of screening and feeding devices 3 are arranged horizontally, and the positions of the plurality of screening and feeding devices 3 match the crushers 2, and a plurality of transmission plates 306 extend from one end away from the crusher 2 to the adjacent screening and feeding device 3.

[0046] Compared with the vertical design of the first embodiment, the present application adopts a horizontal design in which multiple crushers 2 and screening and feeding devices 3 are in the same plane. Although the area occupied is larger than that of the first embodiment, the overall structure is more stable, and it is not easy to cause an unstable center of gravity due to the excessive height of the device, and it is not easy to have a tipping accident, which reduces the construction cost. At the same time, the crushers 2 and screening and feeding devices 3 with compact structural positions can also reduce the dust suppression cost to a certain extent.

[0047] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A sand production line for mineral sand making, characterized by: It includes a screening and feeding module, the screening and feeding module is connected to the crushing module, and the crushing module is connected to the finishing module; The crushing module comprises a working frame (1), a plurality of crushers (2) are fixedly connected to the working frame (1), and the crushing objects of the plurality of crushers (2) decrease from top to bottom. A plurality of screening and feeding devices (3) are provided on one side of the working frame (1), and the positions thereof are respectively matched with the working frame (1). A transition device (4) is provided between two adjacent screening and feeding devices (3). The screening and feeding devices (3) comprise an outer frame (301), a plurality of transmission rollers (302) are rotatably connected inside the outer frame (301), and the gaps between the transmission rollers (302) in the plurality of screening and feeding devices (3) decrease from top to bottom. A transmission plate (306) having a size matching that of the outer frame (301) is fixedly connected to the lower end of the outer frame (301), and a plurality of reinforcing ribs (307) are fixedly connected to the lower end of the transmission plate (306).

2. The sand making production line for mineral sand making according to claim 1 is characterized in that: The outer side of the driving roller (302) is sleeved with an elastic outer covering layer (303), the elastic outer covering layer (303) is a hollow structure, the elastic outer covering layer (303) is filled with a plurality of filling units (304), the plurality of filling units (304) are elastic materials of irregular shapes with different volumes, and the plurality of filling units (304) completely fill the hollow structure of the elastic outer covering layer (303).

3. The sand making production line for mineral sand making according to claim 2 is characterized in that: The cavity of the elastic outer covering layer (303) is filled with liquid water, and the volume of the liquid water is less than 0.5% of the cavity of the elastic outer covering layer (303).

4. The sand making production line for mineral sand making according to claim 2 is characterized in that: A reinforcing net (305) is provided inside the elastic outer covering layer (303), and the reinforcing net (305) is woven from a wear-resistant material.

5. The sand production line for mineral sand making according to claim 1 is characterized in that: The transition device (4) comprises an outer shell (401), wherein the outer shell (401) is made of an elastic material, and a plurality of buffer piles (402) are inserted at one end of the outer shell (401), wherein the buffer piles (402) of two adjacent layers are arranged in a staggered manner, and an end of the buffer pile (402) close to the outer shell (401) penetrates the wall of the outer shell (401) and contacts the inner wall of the opposite outer shell (401), and the buffer pile (402) is inserted obliquely.

6. The sand production line for mineral sand production according to claim 5 is characterized in that: A plurality of prefabricated grooves (403) are bored on the buffer pile (402), and the depth of the plurality of prefabricated grooves (403) decreases as the distance from the inner wall of the outer shell (401) in contact increases.

7. The sand production line for mineral sand production according to claim 5, characterized in that: A tension spring (404) is fixedly connected between one end of the buffer pile (402) located outside the outer shell (401) and the outer wall of the outer shell (401), and the tension spring (404) is sleeved on the outside of the buffer pile (402).

8. A sand production line for mineral sand making, characterized by: The invention comprises a plurality of transversely arranged crushers (2), screening and feeding devices (3) and a transmission plate (306), wherein the crushing objects of the plurality of crushers (2) decrease in size from top to bottom, the plurality of screening and feeding devices (3) are arranged transversely, and the positions of the plurality of screening and feeding devices (3) match the crushers (2), and the plurality of transmission plates (306) extend from one end away from the crusher (2) to an adjacent screening and feeding device (3).

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