A mechanism sand double-mainframe crushing device and process

Abstract

The present invention relates to the technical field of manufactured sand crushing, and particularly relates to a manufactured sand double-mainframe crushing device and process. The present invention provides a manufactured sand double-mainframe crushing device and process that uses a double-mainframe intermixing process for manufactured sand crushing. A manufactured sand double-mainframe crushing device and process includes a first mounting frame, a housing, a lid, a feeding cylinder, etc. Two housings are installed on the lower part of the first mounting frame, lids are rotatably connected to the upper sides of the housings, and feeding cylinders are connected to the upper sides of the lids. By using two first servo motors to crush materials with different gradations and particle sizes, the present invention reduces the number of repeated crushing times of the materials in the crusher, improves the sand production rate, and adjusts the feeding ratio and particle size. Furthermore, it realizes intermixing and blending to produce concrete with different gradations and fineness moduli to meet different functional requirements, while ensuring the continuity and stability of the gradation, and avoiding the problems of unstable fineness modulus and poor gradation of manufactured sand produced by traditional single-machine production.

Description

Technical Field

[0001] The present invention relates to the technical field of machine-made sand crushing, and in particular to a machine-made sand dual-host crushing device and process. Background Art

[0002] The traditional crushing and preparation process of machine-made sand is completed by using a single sand-making machine and auxiliary facilities. It mainly relies on increasing the power of the vertical shaft impact crusher to increase the crushing strength and improve the output. However, the negative effect of increasing the crushing strength will lead to an increase in the fine powder content and accelerated wear of wearing parts. Therefore, it has the disadvantages of low sand output rate, poor grading (large at both ends and small in the middle), and high energy consumption. The crushing principle of the traditional sand making machine makes the material enter the machine at a time. The crushing rate is generally only about 1 to 2 times, and the sand formation rate is low. To obtain qualified machine-made sand, the material needs to be repeatedly fed into the sand making machine. The increase in the number of material cycles significantly increases the energy consumption of other equipment in the system.

[0003] In order to solve the above problems, a machine-made sand dual-host crushing device and process are invented, which adopt a dual-host intermixing process to crush machine-made sand. Summary of the invention

[0004] In order to overcome the disadvantages of low sand formation rate of traditional sand making machines, materials need to be repeatedly fed into the sand making machine to obtain qualified machine-made sand, which increases the number of material circulations and significantly increases the energy consumption of other equipment in the system. The present invention provides a machine-made sand dual-host crushing device and process for crushing machine-made sand by adopting a dual-host intermixing process.

[0005] A machine-made sand dual-host crushing device comprises a first mounting frame, an outer shell, a cover, a material guide cylinder, a crushing mechanism and a material guide mechanism. The lower part of the first mounting frame is equipped with left and right outer shells, the upper sides of the outer shells are rotatably connected with covers, the upper sides of the covers are connected with material guide cylinders, the outer shells are provided with crushing mechanisms for crushing and making sand, the upper part of the first mounting frame is provided with a material guide mechanism, and the material guide mechanism is used to mix and blend materials to blend materials with different gradations and fineness moduli to meet different functional requirements.

[0006] Preferably, the crushing mechanism includes a second mounting frame, a centrifugal crushing component, a first servo motor, a gear set, a cement striking component and a striking iron sheet. The second mounting frame is installed on the inner side of the lower portion of the outer shell, the upper side of the second mounting frame is rotatably connected to the centrifugal crushing component, the first servo motor is installed on the left inner wall of the second mounting frame, a gear set is connected between the output shaft of the first servo motor and the adjacent centrifugal crushing component, a cement striking component is installed on the inner side of the upper portion of the right outer shell, and a striking iron sheet is installed on the inner side of the upper portion of the left outer shell.

[0007] Preferably, the material guiding mechanism includes a material dividing frame, a material guiding frame, a material dividing plate, and a second servo motor. The material dividing frame is on the upper side of the first mounting frame, and the material dividing frame has two left and right material discharge ports and three left, middle and right material feed ports. The left and right material discharge ports correspond to the left and right material guiding cylinders respectively. The upper rear side of the material dividing frame is connected with the material guiding frame, and the middle part of the material dividing frame is rotatably connected with the material dividing plate. The rear side of the material dividing frame is installed with a second servo motor, and the output shaft of the second servo motor is connected with the material dividing plate. Starting the second servo motor will drive the material dividing plate to rotate, and the material dividing plate will rotate and swing to the left, which will cause the middle feed port and the material under the material guiding frame to slide to the right material discharge port, and the material dividing plate will rotate and swing to the right, which will cause the middle feed port and the material under the material guiding frame to slide to the left material discharge port.

[0008] Preferably, a lifting mechanism is also included, which includes a connecting frame, a lifting piece, a first spring and a toggle block. The lower inner side of the second mounting frame is connected to the connecting frame, and the lifting piece is slidably connected to the connecting frame. The lifting piece is in contact with the lower side of the centrifugal crushing piece. The first spring is connected between the lifting piece and the adjacent connecting frame. The gear set is connected to the toggle block, which is in contact with the adjacent lifting pieces respectively. The operation of the gear set will drive the toggle block to rotate and intermittently toggle the lifting piece, and then under the action of the first spring, the lifting piece will move up and down to clear the lifting material.

[0009] Preferably, a loosening mechanism is also included, which includes an air bag, a top sheet, an air-filled part, a lifting column, a second spring and a lifting ring. An air bag is provided on the inner side of the material guide cylinder, and a top sheet is provided on the inner side of the air bag. The upper sides of the lids are connected with air bags, and the lids are slidably connected with lifting columns. The lifting columns and adjacent lids are connected with second springs. The upper sides of the centrifugal crushing parts are connected with lifting rings. The lifting rings rotate and contact with the lifting columns, thereby squeezing the lifting columns to move upward, and the second spring is stretched. At this time, the air in the air bag is squeezed into the air bag, and the air bag expands to shrink the top sheet. After the lifting ring rotates and disengages from the lifting column, the second spring recovers and drives the lifting column to move downward and reset, thereby allowing the air in the air bag to enter the air bag, thereby opening the top sheet. The top sheet contracts and opens back and forth to loosen the stone.

[0010] Preferably, a buffer mechanism is also included, which includes a mounting seat, a first buffer plate, a torsion spring, a limit plate, a limit block and a second buffer plate. The inner side of the rear portion of the material distribution frame is connected to left and right mounting seats, the first buffer plate is rotatably connected between the mounting seats, a torsion spring is connected between the first buffer plate and the mounting seat, the inner side of the rear portion of the material distribution frame is connected to the limit plate, the limit plate contacts the first buffer plate, the rear side of the material distribution frame is connected to the limit block, the limit block contacts the first buffer plate, the left and right sides of the middle portion of the material distribution frame are connected to second buffer plates, and the second buffer plate is elastic.

[0011] Preferably, a sealing mechanism is also included, which includes a sealing plate and a limiting column. The material guide cylinder is connected to the sealing plate, and the lower part of the material distribution frame is connected to left and right limiting columns, which are respectively slidably connected to the sealing plate on the same side.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention utilizes two first servo motors to crush materials of different gradations and particle sizes, thereby reducing the number of repeated crushing times of materials in the crusher, improving the sand output rate, and adjusting the feed ratio and particle size at the same time, thereby realizing the mutual blending of different gradations and fineness moduli to prepare concrete that meets different functional requirements, while ensuring the continuity and stability of the gradation, and avoiding the instability of the fineness modulus and poor gradation of machine-made sand produced by a traditional single machine.

[0014] 2. When the present invention crushes the material, the operation of the gear set will drive the toggle block to rotate, and the rotation of the toggle block will contact the lifting piece, thereby realizing intermittent toggle of the lifting piece, and then under the action of the first spring, the lifting piece will move up and down, and the up and down movement of the lifting piece will realize the unblocking of the lifting material, avoiding the stone from being blocked in the centrifugal crushing part, thereby affecting the crushing effect.

[0015] 3. When the centrifugal crusher of the present invention rotates to crush, it will also drive the lifting ring to rotate. The rotation of the lifting ring will contact the lifting column, and then the lifting column will move up and down under the action of the second spring, so that the airbag will continue to expand and contract, causing the top plate to contract and open back and forth to loosen the stone, thereby preventing the stone from blocking the guide tube.

[0016] 4. In the present invention, when the stone falls, the stone will contact the first buffer plate and the second buffer plate, thereby buffering the force of the stone falling, thereby effectively preventing the centrifugal crusher from being damaged by the impact of the stone falling downward.

[0017] 5. When the lid of the present invention is rotated to open, it will also drive the sealing plate to rotate together. The rotation of the sealing plate will block the discharge port of the material distribution frame, thereby preventing the stone from falling directly into the centrifugal crushing part when the lid is rotated to open, thereby preventing the stone from splashing out and injuring people. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a three-dimensional structural cross-sectional view of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the crushing mechanism of the present invention.

[0022] Figure 5 This is a partial three-dimensional structure schematic diagram of the crushing mechanism of the present invention.

[0023] Figure 6 This is a three-dimensional structure sectional view of the material guiding mechanism of the present invention.

[0024] Figure 7 This is a partial three-dimensional structure sectional view of the material guiding mechanism of the present invention.

[0025] Figure 8 This is a three-dimensional structure schematic diagram of the ejecting mechanism of the present invention.

[0026] Figure 9 This is a partial three-dimensional structure schematic diagram of the ejecting mechanism of the present invention.

[0027] Figure 10 This is an exploded three-dimensional structure diagram of the ejecting mechanism of the present invention.

[0028] Figure 11 This is a three-dimensional structure sectional view of the material loosening mechanism of the present invention.

[0029] Figure 12 This is a partial three-dimensional structure sectional view of the material loosening mechanism of the present invention.

[0030] Figure 13 This is a three-dimensional structure schematic diagram of the buffer mechanism of the present invention.

[0031] Figure 14 This is an enlarged three-dimensional structure diagram of the buffer mechanism of the present invention.

[0032] Figure 15 This is a partial three-dimensional structure schematic diagram of the buffer mechanism of the present invention.

[0033] Figure 16 This is a three-dimensional structure schematic diagram of the sealing mechanism of the present invention.

[0034] Figure 17 This is a partial three-dimensional structure schematic diagram of the sealing mechanism of the present invention.

[0035] Description of reference numerals: 1 - First mounting bracket, 2 - Outer shell, 3 - Lid, 4 - Feeding cylinder, 5 - Crushing mechanism, 51 - Second mounting bracket, 52 - Centrifugal crushing part, 53 - First servo motor, 54 - Gear set, 55 - Cement striking part, 56 - Striking iron sheet, 6 - Feeding mechanism, 61 - Material dividing frame, 62 - Feeding frame, 63 - Material dividing plate, 64 - Second servo motor, 7 - Top material mechanism, 71 - Connecting frame, 72 - Top material part, 73 - First spring, 74 - Poking block, 8 - Loosening material mechanism, 81 - Airbag, 82 - Top piece, 83 - Air inflating part, 84 - Lifting column, 85 - Second spring, 86 - Lifting ring, 9 - Buffer mechanism, 91 - Mounting seat, 92 - First buffer plate, 93 - Torsion spring, 94 - Limiting plate, 95 - Limiting block, 96 - Second buffer plate, 10 - Sealing mechanism, 101 - Sealing plate, 102 - Limiting column. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with the accompanying drawings and detailed implementation manners.

[0037] A double - main - machine crushing device and process for manufactured sand, as Figures 1 - 7 shown, includes a first mounting bracket 1, an outer shell 2, a lid 3, a feeding cylinder 4, a crushing mechanism 5 and a feeding mechanism 6. Two left - and - right outer shells 2 are installed at the lower part of the first mounting bracket 1. Lids 3 are rotatably connected to the upper sides of the outer shells 2. Feeding cylinders 4 are connected to the upper sides of the lids 3. Crushing mechanisms 5 are arranged in the outer shells 2, and a feeding mechanism 6 is arranged at the upper part of the first mounting bracket 1.

[0038] As Figure 2 , Figure 4 and Figure 5 shown, the crushing mechanism 5 includes a second mounting bracket 51, a centrifugal crushing part 52, a first servo motor 53, a gear set 54, a cement striking part 55 and a striking iron sheet 56. Second mounting brackets 51 are installed on the inner sides of the lower parts of the outer shells 2. Centrifugal crushing parts 52 are rotatably connected to the upper sides of the second mounting brackets 51. First servo motors 53 are installed on the left inner walls of the second mounting brackets 51. Gear sets 54 are connected between the output shafts of the first servo motors 53 and the adjacent centrifugal crushing parts 52. A cement striking part 55 is installed on the inner side of the upper part of the right outer shell 2, and a striking iron sheet 56 is installed on the inner side of the upper part of the left outer shell 2.

[0039] As Figure 1 , Figure 3 , Figure 6 and Figure 7As shown, the material guiding mechanism 6 includes a material dividing frame 61, a material guiding frame 62, a material dividing plate 63, and a second servo motor 64. The material dividing frame 61 is on the upper side of the first mounting frame 1, and the material dividing frame 61 has two left and right material discharge ports and three left, middle and right material feed ports. The left and right material discharge ports correspond to the left and right material guiding cylinders 4 respectively. The upper rear side of the material dividing frame 61 is connected with the material guiding frame 62, and the middle part of the material dividing frame 61 is rotatably connected with the material dividing plate 63. The rear side of the material dividing frame 61 is installed with a second servo motor 64, and the output shaft of the second servo motor 64 is connected to the material dividing plate 63.

[0040] When crushing and sand making is required, the two first servo motors 53 are controlled to provide different rotational speeds, and then the centrifugal crushing members 52 on both sides are driven to rotate at different rotational speeds through the gear set 54 to cooperate with the cement striking member 55 and the striking iron sheet 56 to respectively realize coarse crushing and fine crushing, thereby realizing providing different crushing energies to process aggregates of different particle sizes. The two first servo motors 53 are used to crush materials of different gradations and particle sizes, and the crushing effect is better. Under the same product index, the number of repeated crushing of materials in the crusher is reduced, and the sand output rate is improved. At the same time, fine sand, coarse sand and other aggregates can be respectively put into different feeding ports of the dividing frame 61, and then the second servo motor 64 is controlled to drive the dividing plate 63 to rotate, so as to adjust the feed ratio and particle size, thereby realizing the mutual blending of different gradations and fineness moduli to prepare concrete that meets different functional requirements, while ensuring the continuity and stability of the grading, avoiding the instability of the fineness modulus of machine-made sand produced by traditional single machines and the phenomenon of "more at both ends and less in the middle" of the grading.

[0041] like Figure 2 , Figure 8 , Figure 9 and Figure 10 As shown, it also includes a lifting mechanism 7, which includes a connecting frame 71, a lifting piece 72, a first spring 73 and a toggle block 74. The lower inner side of the second mounting frame 51 is connected to the connecting frame 71, and the connecting frame 71 is slidably connected to the lifting piece 72. The lifting piece 72 contacts the lower side of the centrifugal crushing component 52. The first spring 73 is connected between the lifting piece 72 and the adjacent connecting frame 71. The gear set 54 is connected to the toggle block 74, and the toggle block 74 contacts the adjacent lifting pieces 72 respectively.

[0042] When the material is crushed, the operation of the gear set 54 will drive the toggle block 74 to rotate, and the rotation of the toggle block 74 will contact the lifting piece 72, thereby realizing intermittent toggle of the lifting piece 72, and then under the action of the first spring 73, the lifting piece 72 will move up and down, and the up and down movement of the lifting piece 72 will realize the unblocking of the lifting material, avoiding the stone from being blocked in the centrifugal crushing part 52, thereby affecting the crushing effect.

[0043] like Figure 1 , Figure 11 andFigure 12 As shown, it further includes a material loosening mechanism 8. The material loosening mechanism 8 includes an airbag 81, a top piece 82, an air inflation member 83, a jacking column 84, a second spring 85 and a jacking ring 86. The airbag 81 is provided inside the material guiding cylinder 4, the top piece 82 is provided inside the airbag 81, the air inflation members 83 are connected to the upper sides of the lids 3, the jacking columns 84 are slidably connected to the lids 3, the second springs 85 are connected between the jacking columns 84 and the adjacent lids 3, the jacking ring 86 is connected to the upper side of the centrifugal crushing member 52, and the rotation of the jacking ring 86 will contact the jacking column 84.

[0044] When the centrifugal crushing member 52 rotates for crushing, it will also drive the jacking ring 86 to rotate. The rotation of the jacking ring 86 will contact the jacking column 84, thereby squeezing the jacking column 84 to move upward, and the second spring 85 is stretched. At this time, the air in the air inflation member 83 will be squeezed into the airbag 81, and the airbag 81 expands to make the top piece 82 contract. After the jacking ring 86 rotates and disengages from the jacking column 84, the restoration of the second spring 85 will drive the jacking column 84 to move downward and reset, thereby enabling the air in the airbag 81 to enter the air inflation member 83, so that the top piece 82 opens. Repeating like this, the top piece 82 will retract and open repeatedly, and the retraction and opening of the top piece 82 will loosen the stone material, preventing the stone material from blocking the material guiding cylinder 4.

[0045] As Figure 3 、 Figure 13 、 Figure 14 and Figure 15 As shown, it further includes a buffer mechanism 9. The buffer mechanism 9 includes a mounting seat 91, a first buffer plate 92, a torsion spring 93, a limiting plate 94, a limiting block 95 and a second buffer plate 96. Two left and right mounting seats 91 are connected to the inner rear part of the material distribution frame 61. The first buffer plate 92 is rotatably connected between the mounting seats 91. Torsion springs 93 are connected between the first buffer plate 92 and the mounting seats 91. The limiting plate 94 is connected to the inner rear part of the material distribution frame 61, and the limiting plate 94 contacts the first buffer plate 92. The limiting block 95 is connected to the rear side of the material distribution frame 61, and the limiting block 95 contacts the first buffer plate 92. The second buffer plates 96 are connected to the left and right sides in the middle of the material distribution frame 61, and the second buffer plates 96 are elastic.

[0046] When the stone material falls, the stone material will contact the first buffer plate 92 and the second buffer plate 96. The first buffer plate 92 can rotate under the action of the torsion spring 93, and at the same time, it can transfer the force from the falling of the stone material. The limiting plate 94 and the limiting block 95 can limit the rotation position of the first buffer plate 92 to prevent the first buffer plate 92 from rotating excessively and failing to achieve the buffering effect. The second buffer plate 96 can also buffer the force of the falling stone material due to the deformation of its own elasticity, thereby effectively preventing the centrifugal crushing member 52 from being damaged by the impact force of the falling stone material.

[0047] As Figure 1 、Figure 16 and Figure 17 As shown in Figure 17 , it further includes a sealing mechanism 10. The sealing mechanism 10 includes a sealing plate 101 and a limiting post 102. Sealing plates 101 are connected to the guiding cylinder 4, and two left and right limiting posts 102 are connected to the lower part of the material distribution frame 61. The limiting posts 102 are respectively connected to the sealing plates 101 on the same side in a sliding manner.

[0048] When the lid 3 rotates and opens, it will also drive the sealing plate 101 to rotate together. When the sealing plate 101 rotates, it will block the material outlet of the material distribution frame 61, thereby preventing the stone from directly falling into the centrifugal crushing part 52 when the lid 3 rotates and opens, and thus preventing the stone from splashing out and hurting people.

[0049] In the present invention, a mechanism sand double-mainframe crushing process is also proposed. By applying the above-mentioned mechanism sand double-mainframe crushing device, the process includes the following steps:

[0050] Two first servo motors 53 are adopted, which are respectively the primary crushing mainframe and the fine crushing mainframe. By using the different rotation speeds of the two first servo motors 53, different crushing ratios are formed for the crushed stones.

[0051] Among them, the primary crushing mainframe is used for primary crushing. The aggregate is pre-crushed and then enters the multi-layer vibrating screen through the elevator and is divided into three parts: fine sand (0 - 2.36 mm), coarse sand (2.36 - 4.75 mm), and other aggregates (> 4.75 mm). The aggregates larger than 4.75 mm re-enter the primary crushing mainframe for crushing. All or part of the coarse sand enters the fine crushing mainframe for secondary crushing and is mixed with the fine sand to adjust the gradation and fineness modulus of the mechanism sand, and the required finished mechanism sand is formed after powder selection and dust removal.

[0052] The above are only examples of the present invention and are not used to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the prior art well-known to those skilled in the art.

Claims

1. A machine-made sand dual-host crushing device, It is characterized in that The invention comprises a first mounting frame (1), an outer shell (2), a cover (3), a material guide cylinder (4), a crushing mechanism (5) and a material guide mechanism (6); the lower part of the first mounting frame (1) is mounted with two left and right outer shells (2); the upper sides of the outer shells (2) are rotatably connected to the covers (3); the upper sides of the covers (3) are connected to the material guide cylinders (4); the outer shells (2) are provided with crushing mechanisms (5) for crushing and making sand; the upper part of the first mounting frame (1) is provided with a material guide mechanism (6); the material guide mechanism (6) is used to mix and blend materials to prepare materials with different gradations and fineness moduli to meet different functional requirements; The crushing mechanism (5) comprises a second mounting frame (51), a centrifugal crushing element (52), a first servo motor (53), a gear set (54), a cement striking element (55) and a striking iron sheet (56); the second mounting frame (51) is mounted on the inner side of the lower portion of the housing (2); the upper side of the second mounting frame (51) is rotatably connected to the centrifugal crushing element (52); the first servo motor (53) is mounted on the inner wall on the left side of the second mounting frame (51); the output shaft of the first servo motor (53) and the adjacent centrifugal crushing element (52) are connected to the gear set (54); the cement striking element (55) is mounted on the inner side of the upper portion of the right housing (2); the striking iron sheet (56) is mounted on the inner side of the upper portion of the left housing (2); and the two first servo motors (53) provide different rotation speeds; The material guide mechanism (6) comprises a material dividing frame (61), a material guide frame (62), a material dividing plate (63), and a second servo motor (64). The material dividing frame (61) is provided on the upper side of the first mounting frame (1). The material dividing frame (61) has two left and right material discharge ports and three left, middle and right material inlet ports. The left and right material discharge ports correspond to the left and right material guide cylinders (4) respectively. The upper rear side of the material dividing frame (61) is connected to the material guide frame (62). The middle part of the material dividing frame (61) is rotatably connected to the material dividing plate (63). 63), a second servo motor (64) is installed at the rear side of the material distribution frame (61), and the output shaft of the second servo motor (64) is connected to the material distribution plate (63). When the second servo motor (64) is started, the material distribution plate (63) is driven to rotate. When the material distribution plate (63) rotates and swings to the left, the material under the middle material inlet and the material guide frame (62) slides to the right material discharge port. When the material distribution plate (63) rotates and swings to the right, the material under the middle material inlet and the material guide frame (62) slides to the left material discharge port. Among them, the crushing process corresponding to the machine-made sand dual-host crushing device is: Two first servo motors (53) are used, respectively as a coarse crushing main machine and a fine crushing main machine, and different rotation speeds of the two first servo motors (53) are used to form different crushing ratios for the crushed stones; The coarse crushing machine is used as the primary crushing machine to pre-crush the aggregate, and then it enters the multi-layer vibrating screen through the elevator to be separated into three parts: fine sand with a particle diameter of 0-2.36mm, coarse sand with a particle diameter of 2.36-4.75mm and other aggregates with a particle diameter greater than 4.75mm; the aggregate greater than 4.75mm enters the coarse crushing machine again for crushing, and all or part of the coarse sand enters the fine crushing machine for secondary crushing and is mixed with fine sand to adjust the grading and fineness modulus of the machine-made sand, and is formed into the required finished machine-made sand after powder selection and dust removal.

2. A machine-made sand dual-host crushing device according to claim 1, It is characterized in that The invention also comprises a material ejection mechanism (7), which comprises a connecting frame (71), a material ejection member (72), a first spring (73) and a toggle block (74). The inner side of the lower part of the second mounting frame (51) is connected to the connecting frame (71), and the material ejection member (72) is slidably connected to the connecting frame (71). The material ejection member (72) contacts the lower side of the centrifugal crushing member (52). The first spring (73) is connected between the material ejection member (72) and the adjacent connecting frame (71). The gear set (54) is connected to a toggle block (74), and the toggle block (74) contacts the adjacent material ejection member (72). The operation of the gear set (54) drives the toggle block (74) to rotate and intermittently toggle the material ejection member (72), and then under the action of the first spring (73), the material ejection member (72) moves up and down to clear the material ejection.

3. A machine-made sand dual-host crushing device according to claim 2, It is characterized in that The invention also comprises a material loosening mechanism (8), the material loosening mechanism (8) comprising an air bag (81), a top plate (82), an air blowing member (83), a lifting column (84), a second spring (85) and a lifting ring (86), the inner side of the material guide cylinder (4) is provided with an air bag (81), the inner side of the air bag (81) is provided with a top plate (82), the upper side of each cover (3) is connected with an air blowing member (83), each cover (3) is slidably connected with a lifting column (84), the lifting column (84) and the adjacent cover (3) are connected with a second spring (85), the upper side of the centrifugal crushing member (52) is connected with a lifting ring (86), and the top plate (82) is provided with an air blowing member (83). The lifting ring (86) rotates to contact the lifting column (84), thereby squeezing the lifting column (84) to move upward, and the second spring (85) is stretched, at which time the air in the gas-filled member (83) is squeezed into the airbag (81), and the airbag (81) expands to cause the top sheet (82) to contract. After the lifting ring (86) rotates and disengages from the lifting column (84), the second spring (85) is restored to drive the lifting column (84) to move downward and reset, thereby causing the air in the airbag (81) to enter the gas-filled member (83), thereby causing the top sheet (82) to open. The top sheet (82) contracts and opens back and forth to loosen the stone.

4. A machine-made sand dual-host crushing device according to claim 3, It is characterized in that It further includes a buffer mechanism (9). The buffer mechanism (9) includes a mounting base (91), a first buffer plate (92), a torsion spring (93), a limiting plate (94), a limiting block (95) and a second buffer plate (96). Two left and right mounting bases (91) are connected to the inner side of the rear part of the material distribution frame (61). A first buffer plate (92) is rotatably connected between the mounting bases (91). Torsion springs (93) are connected between the first buffer plate (92) and the mounting bases (91). A limiting plate (94) is connected to the inner side of the rear part of the material distribution frame (61). The limiting plate (94) contacts the first buffer plate (92). A limiting block (95) is connected to the rear side of the material distribution frame (61). The limiting block (95) contacts the first buffer plate (92). Second buffer plates (96) are connected to the left and right sides in the middle of the material distribution frame (61). The second buffer plates (96) are elastic.

5. A double-mainframe crushing device for manufactured sand according to claim 4, characterized in that, it further includes a sealing mechanism (10). The sealing mechanism (10) includes a sealing plate (101) and a limiting column (102). Sealing plates (101) are connected to the guide cylinder (4). Two left and right limiting columns (102) are connected to the lower part of the material distribution frame (61). The limiting columns (102) are respectively slidably connected to the sealing plates (101) on the same side.

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