Stone screening equipment for concrete processing

Abstract

The invention relates to stone screening equipment for concrete processing, and relates to the technical field of stone screening, the screening equipment comprises a frame body, a screening mechanism and a conveying mechanism, the screening mechanism comprises a screening piece, and the top of the screening piece is provided with a feeding port for stone to enter; the screening shaft is rotationally arranged on the screening part and extends into the screening part; and the multiple screening pieces are arranged on the screening shaft, and a screening space for temporarily storing the stones is formed between every two adjacent screening pieces and the inner side wall of the screening piece. According to the stone screening device, stone is added into the screening space, the stone pushes the screening pieces to rotate, the stone is sequentially moved to the multiple screening hole sets, the stone of different specifications enters different conveying mechanisms to be conveyed, and therefore the screening efficiency is improved, and energy is saved.

Description

Technical Field

[0001] The present application relates to the technical field of stone screening, and in particular to a stone screening device for concrete processing. Background Art

[0002] Stone screening equipment is a professional equipment used in mining, building materials industry, etc. to grade, screen and separate stones. They are usually used to screen raw stones according to different particle size requirements to meet the needs of different uses and projects.

[0003] Existing screening equipment can generally only screen out two specifications. Therefore, when it is necessary to screen out three or more specifications of stone, multiple screenings are required, which reduces the screening efficiency and increases the energy consumption during screening. In addition, during the screening process, the stone is generally transported to the screening plate, and the screening plate vibrates to achieve screening. The stone is easily accumulated on the screening plate during the transportation process, which also reduces the screening efficiency. Summary of the invention

[0004] In order to improve screening efficiency and save energy, the present application provides a stone screening device for concrete processing.

[0005] The present application provides a stone screening device for concrete processing, which adopts the following technical solution: A stone screening device for concrete processing, comprising a frame, a screening mechanism and a conveying mechanism arranged on the frame, wherein the screening mechanism is used to screen stones into at least three specifications, and the screening mechanism is used to convey stones of different specifications separately, and the screening mechanism comprises: The screening element is arranged on the frame and has a feeding port on the top for stones to enter; A screening shaft, rotatably disposed on the screening element and extending into the screening element; A plurality of screening plates are arranged on the screening shaft in a circular array around the axis of the screening shaft, and a screening space for temporary storage of stones is formed between two adjacent screening plates and the inner wall of the screening element. The screening element is provided with a plurality of screening hole groups with gradually increasing apertures in a circular array around the axis of the screening shaft, and are respectively connected to a plurality of conveying mechanisms. When stones enter the screening space through the feed port, the screening plates are pushed to rotate, so that the stones in the screening space are moved to the plurality of screening hole groups in turn, and stones of different particle sizes enter the conveying mechanism through the screening hole groups for conveying and are used to screen out stones of at least three specifications.

[0006] By adopting the above technical scheme, stones are added into the screening space through the feed port. When the stones enter, they will form an impact force on the screening discs, thereby driving the screening discs to rotate. The stones are moved to multiple screening hole groups in turn. The stones with the smallest particle size first enter the conveying mechanism through the screening hole group with the smallest aperture for conveying, thereby realizing stone screening, and the stones with a particle size larger than the aperture of the smallest screening hole group continue to move forward, and then the screening of the stones is repeated, thereby realizing the screening of at least three specifications of stones. At the same time, as the stones are screened, the number of stones gradually decreases until all of them are moved out through the screening hole group for screening, thereby making it easier for multiple screening discs to rotate in the screening element, so that at least three types of stones can be screened at one time. At the same time, the rotation of the screening discs does not require additional energy, thereby improving the screening efficiency and saving energy.

[0007] The screening disc will also push the stone when rotating, making it easier for the stone to be spread out in the screening space, so that the stone can make full use of the screening space and the screening hole group to achieve stone screening, further improving the screening efficiency and saving energy.

[0008] Optionally, a circular mounting hole is provided on the screening member, a mounting plate is rotatably connected to the mounting hole, the screening shaft is arranged on the mounting plate, the screening space is formed by the cooperation of two adjacent screening plates, the screening member and the mounting plate, and a plurality of moving components are arranged on the mounting plate, which extend into a plurality of screening spaces respectively and are used to move the stones in the screening space.

[0009] By adopting the above technical solution, after the stone enters the screening space, it pushes the screening plate to rotate, and the rotation of the screening plate drives the screening shaft and the mounting plate to rotate. Due to the design of multiple toggle components, the force required for the rotation of multiple screening plates is increased, thereby increasing the number of stones located in the screening space, and also extending the time that the stones stay in multiple screening hole groups, thereby improving the screening efficiency, and allowing more stones that meet the requirements to pass through the screening hole group instead of entering the next screening hole group, which can simultaneously improve the screening efficiency and accuracy of the stones.

[0010] At the same time, when the stone pushes the screening plate to rotate, the toggle assembly starts to toggle the stone, so that the stone that cannot pass through the screening hole group moves away from the screening hole group, and the stone that can pass through the screening hole group is quickly transported through the screening hole group. When the stone screening in the screening space is completed, the toggle assembly stops moving, which improves the screening efficiency and allows more stones that meet the requirements to pass through the screening hole group instead of entering the next screening hole group, which can simultaneously improve the screening efficiency and accuracy of the stone.

[0011] Optionally, the toggle assembly includes: A toggle lever is rotatably mounted on the mounting plate and extends into the screening space; A plurality of toggle pieces are arranged on the toggle rod and used for toggle the stone; The toggle member is used to drive the toggle rod to rotate.

[0012] By adopting the above technical solution, the toggle member starts to drive the toggle rod to rotate, and the rotation of the toggle rod drives multiple toggle plates to rotate. The rotation of multiple toggle plates is used to toggle the stones, so that the stones that cannot pass through are moved away and the stones that can pass through are accelerated to enter the conveying mechanism for transportation, which greatly improves the screening efficiency and accuracy of the stones.

[0013] Optionally, a plurality of arc-shaped buffer grooves are provided on the screening shaft along the axis of the screening shaft, and a plurality of the screening plates are slidably connected to the plurality of buffer grooves through elastic elastic components. When the stone is input into the screening space through the feed port, the screening plate in contact with the stone is pushed close to the screening hole group.

[0014] By adopting the above technical solution, when the stone enters the screening space through the feed port, it will form an impact force on the screening plate, thereby pushing the screening plate to move toward the screening hole group with the smallest aperture, so that the stone with the smallest particle size can be moved out through the screening hole group as soon as possible to be screened, thereby improving the screening efficiency and reducing the risk of mixing between different specifications and resulting in low screening accuracy, while improving the screening efficiency and accuracy of the stone.

[0015] When the stone just enters the screening space, it will only push the screening plate in contact with it to rotate, and the elastic component can achieve buffering, so that it will not pass through this screening plate and cause multiple screening plates to rotate at the same time. Only after the stone forms a certain accumulation on the screening plate will it push multiple screening plates to rotate. Moreover, as the screening is carried out, the stone in the screening space will gradually decrease, and the squeezing pressure on the screening plate will decrease. Both screening plates move back in the elastic component, that is, the two screening plates rotate toward the direction of the screening hole group with the smallest aperture, until the screening plate rotates back to its original position, thereby greatly extending the residence time of the stone at the screening control group, while improving the screening efficiency and accuracy of the stone.

[0016] Optionally, the elastic component includes: A sliding block is slidingly arranged on the buffer groove, and one end of the screening sheet is arranged on the sliding block; A spring, arranged on the buffer groove and the sliding block; The guard plate is arranged on the sliding block and fits on the screening shaft and is used for sealing the buffer groove.

[0017] By adopting the above technical solution, the stone pushes the screening plate to rotate, and the rotation of the screening plate drives the sliding block to rotate and pushes the spring to achieve extrusion. As the thrust of the stone on the screening plate decreases, the spring can push the screening plate to rotate. At the same time, the rotation of the screening plate drives the guard plate to rotate. The movement of the guard plate can block the buffer groove, thereby preventing dust and other impurities from entering the buffer groove, so that the screening plate can better screen the stone, while improving the screening efficiency and accuracy of the stone.

[0018] Optionally, the conveying mechanism includes: A conveyor belt is arranged on the frame and is used for conveying stones; A plurality of partition plates are arranged on the frame at intervals and extend onto the conveyor belt, wherein the partition plates and the conveyor belt cooperate to form a conveying space for conveying stone materials; A plurality of guide components are arranged on the frame and are arranged corresponding to the plurality of screening hole groups and are used for guiding and conveying stones of different specifications to different conveying spaces.

[0019] By adopting the above technical solution, multiple guide components guide stones of different specifications into the conveying space, and the conveyor belt starts to convey stones of multiple different specifications at the same time. Therefore, stones of multiple different specifications can be separately conveyed through the same conveyor belt, thereby improving the efficiency of stone screening.

[0020] Optionally, the guide assembly includes: A receiving tube, disposed on the lower surface of the screening element and connected to the screening hole group; The discharge pipe is arranged at the bottom end of the receiving pipe and extends vertically downward to the conveying space. The stones passing through the screening hole group are transported to the conveying space through the receiving pipe and the discharge pipe in turn.

[0021] By adopting the above technical solution, the receiving pipe can receive the incoming stones, and then the discharge pipe transports the stones to the conveying space for transportation.

[0022] Optionally, the partition plate is slidably mounted on the frame, and a positioning member for positioning the partition plate is provided on the partition plate.

[0023] By adopting the above technical solution, the positioning part is unlocked and then the partition plate is moved. After the movement is completed, the positioning part locks the partition plate, so that the size of the conveying space can be adjusted according to the number of stones of different specifications, so that the conveyor belt can have better conveying capacity and improve the efficiency of stone screening.

[0024] Optionally, the positioning member is a positioning screw that is threadedly connected to the partition plate and pressed against the frame for positioning.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By adding stones into the screening space, the stones push the screening disc to rotate, and the stones are moved to multiple screening hole groups in turn. Stones of different specifications enter different conveying mechanisms for transportation, thereby realizing stone screening. In this way, at least three types of stones can be screened at one time. At the same time, the rotation of the screening disc does not require additional energy, thereby improving screening efficiency and saving energy.

[0026] 2. The stone is pushed by the rotation of the screening plate, making it easier for the stone to be spread out in the screening space, so that the stone can make full use of the screening space and the screening hole group to achieve stone screening, further improving the screening efficiency and saving energy.

[0027] 3. The toggle assembly is used to toggle the stones, so that the stones that cannot pass through the screening hole group are moved away from the screening hole group, while the stones that can pass through the screening hole group are quickly transported. When the screening of the stones in the screening space is completed, the toggle assembly stops moving, which improves the screening efficiency and allows more stones that meet the requirements to pass through the screening hole group instead of entering the next screening hole group, which can simultaneously improve the screening efficiency and accuracy of the stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the screening equipment; Figure 2 It is a schematic diagram of the structure of the screening mechanism and the toggle assembly in the screening device, wherein the side wall of the screening element is cut away; Figure 3 It is a partial exploded view of the screening equipment, mainly showing the elastic components; Figure 4 It is a structural diagram of the conveying mechanism in the screening equipment.

[0029] Figure numerals: 1. frame; 11. support rod; 2. screening mechanism; 21. screening member; 22. screening plate; 23. mounting hole; 24. mounting plate; 25. screening space; 26. feed inlet; 3. screening shaft; 31. buffer groove; 32. screening hole group; 33. screening circular hole; 4. elastic component; 41. sliding block; 42. spring; 43. guard plate; 5. toggle component; 51. toggle rod; 52. toggle plate; 53. toggle member; 6. conveying mechanism; 61. conveyor belt; 62. partition plate; 63. positioning member; 64. conveying space; 7. guide component; 71. receiving tube; 72. discharge tube. DETAILED DESCRIPTION

[0030] The present application is described in further detail below.

[0031] The embodiment of the present application discloses a stone screening device for concrete processing.

[0032] Reference Figure 1The stone screening equipment for concrete processing includes a frame 1, a screening mechanism 2 and a conveying mechanism 6 arranged on the frame 1, the screening mechanism 2 is used to screen the stones into at least three specifications, and the conveying mechanism 6 is used to separately convey the stones of different specifications.

[0033] Reference Figure 1 and Figure 2 The screening mechanism 2 includes a screening element 21, a screening shaft 3 and a plurality of screening plates 22. Two support rods 11 arranged at intervals along the width direction of the frame 1 are fixedly installed on the upper surface of the frame 1, and the support rods 11 are arranged vertically upward. The screening element 21 is a horizontally placed tubular structure. The screening element 21 is fixedly installed on the top of the two support rods 11, and the axis of the screening element 21 is parallel to the length direction of the frame 1; a circular mounting hole 23 connected to the inside of the screening element 21 is coaxially opened at one end of the screening element 21, and a mounting plate 24 is coaxially rotatably installed on the mounting hole 23. One end of the screening shaft 3 is coaxially fixedly installed on the side wall of the mounting plate 24 close to the inside of the screening element 21, and the screening shaft 3 extends into the screening element 21 along the axis of the screening element 21, and the axes of the screening shaft 3 and the screening element 21 coincide.

[0034] Reference Figure 2 and Figure 3 , an arc-shaped buffer groove 31 is coaxially provided on the side wall of the screening shaft 3, and a plurality of buffer grooves 31 are arranged in a circular array around the axis of the screening shaft 3; a plurality of screening plates 22 are arranged one by one with a plurality of buffer grooves 31 and are all slidably installed on the buffer grooves 31 through an elastic elastic component 4, and two adjacent screening plates 22 cooperate with the inner side wall of the screening element 21 and the mounting plate 24 to form a screening space 25, and there are at least five screening plates 22 and screening spaces 25. A feed port 26 for stone to enter is provided at the top of the screening element 21 and located on one side of the highest point of the screening element 21, and the screening plate 22 rotates clockwise from the highest point of the screening element 21 to the feed port 26.

[0035] A plurality of screening hole groups 32 are provided on the outer wall of the screening element 21 and below the feed port 26, and are spaced apart around the axis of the screening shaft 3. There are at least three screening hole groups 32, and each screening hole group 32 is evenly spaced apart with a plurality of screening circular holes 33. The screening circular holes 33 in the screening hole group 32 closest to the feed port 26 have the smallest aperture, and the aperture of the screening circular holes 33 gradually increases.

[0036] The stone enters the screening space 25 through the feed port 26, and the stone pushes the screening plate 22 to squeeze the elastic component 4 so that the screening plate 22 rotates toward the screening hole group 32, so that the screening plate 22 rotates clockwise, and the stone accumulates on the screening plate 22. As the thrust of the elastic component 4 on the screening shaft 3 increases, the screening shaft 3 and the mounting plate 24 are pushed to rotate, and the stone moves to the screening circular hole 33 with the smallest diameter. The stone less than or equal to the screening circular hole 33 is discharged through the screening circular hole 33, so that the stone is screened, and the stone that has not passed is moved to the next screening hole group 32 for continued screening until the stone screening is completed, so as to screen at least three specifications of stone, that is, select stones of three particle sizes.

[0037] At the same time, as the screening plate 22 rotates, the stones in the screening space 25 move forward, and the stones enter the next screening space 25 through the feed port 26. As the screening space 25 moves forward, the stones in the screening space 25 gradually become less due to screening, and the squeezing force on the screening plate 22 becomes smaller. The screening plate 22 rotates under the action of the elastic component 4, and the screening plate 22 pushes the stones to move back, thereby greatly extending the residence time of the stones at the screening hole group 32, thereby improving the screening efficiency and the accuracy of the screening process.

[0038] Multiple elastic components 4 have the same structure. The elastic component 4 connected to the screening plate 22 that contacts when the stone is input through the feed port 26 is explained below as an example. The elastic component 4 includes a sliding block 41, a spring 42 and a guard plate 43. The sliding block 41 is arc-shaped and is slidably installed on the buffer groove 31. The sliding path of the sliding block 41 is arc-shaped and the center of the circle is located on the axis of the screening shaft 3. One end of the sliding block 41 extends to the outside of the buffer groove 31.

[0039] The spring 42 is fixedly mounted on one end of the buffer groove 31 and the other end is fixedly mounted on the side wall of the sliding block 41. The spring 42 is located on the buffer groove 31 and on the side of the screening plate 22 away from the feed port 26. The spring 42 pushes the screening plate 22 to maintain a tendency to approach the feed port 26; the guard plate 43 is fixedly mounted on the side wall of the sliding block 41, and the guard plate 43 is arc-shaped and adheres to the outer wall of the screening shaft 3 and is used to block the buffer groove 31 where the spring 42 is installed, so as to prevent dust and other impurities from entering the buffer groove 31 where the spring 42 is installed.

[0040] Reference Figure 1 and Figure 2 A toggle assembly 5 is provided on the mounting plate 24 and at a position corresponding to the screening space 25. The toggle assembly 5 is close to the screening hole group 32, that is, the toggle assembly 5 is close to the outer ring surface of the screening element 21; the toggle assembly 5 is used to toggle the stone.

[0041] The toggle assembly 5 includes a toggle rod 51, a plurality of toggle plates 52 and a toggle member 53. The toggle rod 51 passes through the mounting plate 24 along the axis of the screening shaft 3 and extends into the screening space 25, and the toggle rod 51 is rotatably mounted on the mounting plate 24; the plurality of toggle plates 52 are fixedly mounted on the toggle rod 51 and arranged axially along the toggle rod 51, the toggle member 53 is a motor, the toggle member 53 is fixedly mounted on the side wall of the mounting plate 24, and the output shaft of the toggle member 53 is fixedly connected to the toggle rod 51.

[0042] The following is an example of a toggle assembly 5 at a screening space 25. The toggle member 53 starts to drive the toggle rod 51 to rotate, and the rotation of the toggle rod 51 drives multiple toggle plates 52 to rotate, so as to achieve the toggle of stones, so that stones larger than the screening circular hole 33 quickly move away from the screening circular hole 33, and stones smaller than or equal to the screening circular hole 33 can quickly pass through the screening circular hole 33 and be discharged. When the stone screening is completed, the toggle member 53 controls the toggle rod 51 to stop rotating, and after the screening plate 22 drives the screening shaft 3 to rotate under the driving force of the stone, the toggle member 53 restarts to drive the toggle rod 51 to rotate, and multiple toggle assemblies 5 are started at the same time, so that the stones in multiple screening spaces 25 are toggle screened.

[0043] Reference Figure 1 and Figure 4 The conveying mechanism 6 includes a conveyor belt 61, a plurality of partition plates 62 and a plurality of guide components 7. The conveyor belt 61 is arranged on the frame 1 and is located below the screening element 21. The conveyor belt 61 is in a horizontal state and is used to convey the screened stones. A plurality of conveyor rollers and a conveyor motor are installed on the frame 1. The conveyor belt 61 is sleeved on a plurality of conveyor rollers. The conveyor motor is started to drive the conveyor rollers to rotate to realize the movement of the conveyor belt 61. The structure of the conveyor belt 61 is the same as that of the prior art and will not be repeated here.

[0044] There are at least two partition plates 62, and one end of the partition plate 62 is slidably installed on the upper surface of the frame 1, and the other end of the partition plate 62 extends to the top of the conveyor belt 61 along the direction of conveying stones by the conveyor belt 61, and the partition plate 62 rests on the upper surface of the conveyor belt 61; a positioning member 63 for positioning the partition plate 62 is provided on the partition plate 62, and the positioning member 63 is a positioning screw threadedly connected to the upper surface of the partition plate 62 and pressed against the upper surface of the frame 1 for positioning; two adjacent partition plates 62 and the conveyor belt 61 cooperate to form a conveying space 64, and the two outermost partition plates 62 also cooperate with the conveyor belt 61 to form a conveying space 64, and the conveying space 64 is used to convey stones.

[0045] Reference Figure 2 and Figure 4, multiple guide components 7 are arranged in a one-to-one correspondence with multiple screening hole groups 32, and the guide components 7 are used to transport the stones discharged from the screening hole groups 32 to the conveying space 64 for transportation; the guide components 7 include a receiving pipe 71 and a discharge pipe 72, the receiving pipe 71 is fixedly installed on the outer wall of the screening element 21, and one screening hole group 32 is connected to one receiving pipe 71, and the receiving pipe 71 is away from the screening element 21 and is in an inwardly contracted shape and arranged downward; the discharge pipe 72 is fixedly installed at the bottom of the receiving pipe 71, and the discharge pipe 72 is vertically downwardly arranged and extends into a conveying space 64, and the receiving pipe 71 and the discharge pipe 72 cooperate to transport stones of the same particle size into the conveying space 64 for transportation.

[0046] The working principle of the embodiment of the present application is as follows: The stone enters the screening space 25 through the feed port 26, and the stone pushes the screening plate 22 to squeeze the spring 42 so that the screening plate 22 rotates toward the screening hole group 32, so that the screening plate 22 rotates clockwise, and the stone accumulates on the screening plate 22, and then pushes the screening shaft 3, the mounting plate 24 and multiple screening plates 22 to rotate at the same time, and the stone moves to the screening circular hole 33 with the smallest diameter, and the stone less than or equal to the screening circular hole 33 is discharged through the screening circular hole 33, and at the same time, the toggle member 53 drives the toggle plate 52 to rotate and is used to toggle the stone, so that the stone can be discharged through the screening circular hole 33 faster, so as to achieve the screening of the stone, and the stone that has not passed is moved to the next screening hole group 32 to continue screening until the stone screening is completed, so as to achieve the screening of at least three specifications of stone.

[0047] At the same time, as the screening plate 22 rotates, the stones in the screening space 25 move forward, and the stones enter the next screening space 25 through the feed port 26. As the screening space 25 moves forward, the stones in the screening space 25 gradually become less due to screening, and the squeezing force on the screening plate 22 becomes smaller. The screening plate 22 rotates under the action of the spring 42, and the screening plate 22 pushes the stones to move back, thereby greatly extending the residence time of the stones at the screening hole group 32, thereby improving the screening efficiency and accuracy of the screening process.

[0048] The stones passing through the screening circular holes 33 are transported to the conveying space 64 through the receiving pipe 71 and the discharge pipe 72 in turn, so that stones of various specifications are transported to multiple conveying spaces 64, and the conveyor belt 61 starts to transport stones of different specifications, thereby improving the screening efficiency and accuracy during the screening process.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stone screening device for concrete processing, characterized in that: The invention comprises a frame (1), a screening mechanism (2) arranged on the frame (1), and a conveying mechanism (6), wherein the screening mechanism (2) is used to screen stones into at least three specifications, and the screening mechanism (2) is used to convey stones of different specifications separately, and the screening mechanism (2) comprises: A screening element (21) is arranged on the frame (1) and has a feeding port (26) on the top for stones to enter; A screening shaft (3) rotatably disposed on the screening element (21) and extending into the screening element (21); A plurality of screening plates (22) are arranged on the screening shaft (3) in a circular array around the axis of the screening shaft (3), and a screening space (25) for temporarily storing stones is formed between two adjacent screening plates (22) and the inner wall of the screening element (21). The screening element (21) is provided with a plurality of screening hole groups (32) with gradually increasing apertures and respectively connected to a plurality of conveying mechanisms (6) in a circular array around the axis of the screening shaft (3). When stones enter the screening space (25) through the feed port (26), the screening plates (22) are pushed to rotate, so that the stones in the screening space (25) are sequentially moved to the plurality of screening hole groups (32), and stones of different particle sizes are transported through the screening hole groups (32) into the conveying mechanism (6) and are used to screen out stones of at least three specifications.

2. The stone screening equipment for concrete processing according to claim 1, characterized in that: The screening member (21) is provided with a circular mounting hole (23), a mounting plate (24) rotatably connected to the mounting hole (23), the screening shaft (3) being arranged on the mounting plate (24), the screening space (25) being formed by cooperation between two adjacent screening plates (22), the screening member (21) and the mounting plate (24), and the mounting plate (24) being provided with a plurality of moving components (5) respectively extending into the plurality of screening spaces (25) and used for moving stones in the screening spaces (25).

3. The stone screening equipment for concrete processing according to claim 2 is characterized in that: The toggle assembly (5) comprises: A toggle rod (51) is rotatably mounted on the mounting plate (24) and extends into the screening space (25); A plurality of toggle plates (52) are arranged on the toggle rod (51) and are used to toggle the stone; The toggle member (53) is used to drive the toggle rod (51) to rotate.

4. The stone screening equipment for concrete processing according to claim 1, characterized in that: A plurality of arc-shaped buffer grooves (31) are provided on the screening shaft (3) along the axis of the screening shaft (3), and the plurality of screening plates (22) are slidably connected to the plurality of buffer grooves (31) via elastic elastic components (4). When the stone is input into the screening space (25) through the feed port (26), the screening plates (22) in contact with the stone are pushed close to the screening hole group (32).

5. The stone screening device for concrete processing according to claim 4, characterized in that: The elastic component (4) comprises: A sliding block (41) is slidably disposed on the buffer groove (31), and one end of the screening plate (22) is disposed on the sliding block (41); A spring (42) is arranged on the buffer groove (31) and the sliding block (41); The guard plate (43) is arranged on the sliding block (41) and is attached to the screening shaft (3) and is used to seal the buffer groove (31).

6. The stone screening equipment for concrete processing according to claim 1, characterized in that: The conveying mechanism (6) comprises: A conveyor belt (61) is arranged on the frame (1) and is used to convey stones; A plurality of partition plates (62) are arranged at intervals on the frame (1) and extend onto the conveyor belt (61), wherein the partition plates (62) and the conveyor belt (61) cooperate to form a conveying space (64) for conveying stone materials; A plurality of guide assemblies (7) are arranged on the frame (1) and are arranged corresponding to the plurality of screening hole groups (32) and are used to guide and transport stones of different specifications to different transport spaces (64).

7. The stone screening equipment for concrete processing according to claim 6, characterized in that: The guide assembly (7) comprises: A receiving tube (71) is disposed on the lower surface of the screening element (21) and is in communication with the screening hole group (32); The discharge pipe (72) is arranged at the bottom end of the receiving pipe (71) and extends vertically downward to the conveying space (64). The stones passing through the screening hole group (32) are sequentially conveyed through the receiving pipe (71) and the discharge pipe (72) to the conveying space (64) for conveying.

8. The stone screening equipment for concrete processing according to claim 6, characterized in that: The partition plate (62) is slidably mounted on the frame (1), and a positioning member (63) for positioning the partition plate (62) is provided on the partition plate (62).

9. The stone screening equipment for concrete processing according to claim 8, characterized in that: The positioning member (63) is a positioning screw that is threadedly connected to the partition plate (62) and pressed against the frame body (1) for positioning.

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