Basalt split screening device and screening method

Abstract

The invention relates to the technical field of screening and separating, in particular to a basalt split screening device and method.The basalt split screening device comprises a rack, a feeding hopper is arranged on the rack, a screening assembly is arranged in the feeding hopper, and the screening assembly comprises chain structures arranged in parallel, a chain net structure arranged between the chain structures and a transmission structure; the chain net structure comprises a plurality of movably connected net buckles, gaps among the net buckles serve as screening holes, and the screening assembly is used for achieving movement among the net buckles through the transmission structure to complete the screening process; the rotary motion of the motor is converted into the reciprocating motion of the net buckle through the cam and the screening rod, and through the motion, the screening holes are continuously changed in the screening process; the chain rod penetrates through the net buckle and is connected with the chain structure, so that the stability and the movement coordination of the chain net structure are improved, and the uniformity of the change of the sieve pores is ensured; therefore, the problem of powder blockage of structures such as a fixed screen and a vibrating screen in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of screening and separation, and in particular to a basalt separation screening device and a screening method. Background Art

[0002] Continuous basalt fiber (CBF) is the most cost-effective substitute for most high-strength glass fiber, aramid fiber, and carbon fiber products. It is made from natural basalt as raw material.

[0003] In the preparation process of continuous basalt fiber, the pre-process includes: crushing the basalt bedrock, and then magnetically separating the powder and entering the mixing mechanism to evenly stir it into the material to be used and enter the silo; in the above process, a magnetic separator is often used for screening. Since the particle size of the crushed powder is not uniform, the conventional fixed particle size screen often blocks the sieve holes during the screening process, resulting in reduced screening efficiency. Even when the vibrating screen and other devices are performing split screening, irregular powders still have clogging problems. Summary of the invention

[0004] The main purpose of the present invention is to provide a basalt split screening device and screening method, aiming to solve the problem of sieve hole blockage in the fixed screen in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides a basalt split screening device, including a frame, a feed hopper is arranged on the frame, a screening assembly is arranged in the feed hopper, the screening assembly includes a chain structure arranged in parallel, a chain net structure arranged between the chain structures and a transmission structure, the chain net structure includes a plurality of movably connected net buckles, and the gaps between the plurality of net buckles serve as sieve holes. The screening assembly is used to realize the movement between the net buckles through the transmission structure to complete the screening process.

[0006] Optionally, the chain net structure also includes a chain rod passing through the net buckles, both ends of the chain rod pass through the chain structure, the transmission structure includes a fixed plate, a plurality of transmission rods and a plurality of screening rods, the fixed plate is fixedly connected to the inner side of the feed hopper, the plurality of transmission rods are rotatably set on the fixed plate, the screening rod is slidably set in the fixed plate, and a cam is provided on the transmission rod, one end of the screening rod is connected to the chain rod, and the other end of the screening rod is always in contact with the cam.

[0007] Optionally, a batching hopper and a mixing assembly are also provided on the frame, and the feed hopper is connected to the batching hopper and the mixing assembly, a weighing structure and a feeding structure are provided at the upper end of the mixing assembly, and a discharge port is provided at the lower end of the mixing assembly.

[0008] Optionally, slot holes are provided on the screening rod, movable holes are provided on the fixed plate, limiting pins that cooperate with the slot holes are arranged in the movable holes, a return spring is arranged on the outer periphery of the screening rod, and two ends of the return spring are respectively abutted against the fixed plate and the screening rod.

[0009] Optionally, a material distribution port is arranged on one side of the screening assembly, and a magnetic coil is arranged in the feed hopper.

[0010] Optionally, there is an angular difference in the initial positions of the cams in the transmission structure, and the minimum angular difference is 45°.

[0011] Optionally, the chain structure includes outer chain links and inner chain links that are movably spaced in sequence, and the chain rod movably penetrates through the inner chain links.

[0012] Optionally, every four adjacent chain rods form a screening unit. The angular difference corresponding to the initial positions of the cams in the screening unit is 90°. Along the direction of the chain structure, when the cam is at the midpoint of the stroke, the lower end surface of the inner chain link is horizontal.

[0013] A screening method includes the following steps: After starting the screening device, put the crushed basalt powder into the feed hopper, and complete the screening process of the basalt powder through the sieve holes of the screening assembly.

[0014] Optionally, the screening process specifically includes: The mesh buttons in the chain mesh structure generate a movement process through the transmission structure. The mesh buttons during the movement process serve as sieve holes to screen the basalt powder, and the powder that does not meet the particle size of the sieve holes is discharged through the movement process of the mesh buttons to complete the screening process.

[0015] A basalt split screening device and screening method proposed in an embodiment of the present invention form a chain mesh structure through movably connected mesh buttons. The sieve holes are formed by the gaps between the mesh buttons. Under the action of the transmission structure, the mesh buttons can generate movement to change the gap size; by using cams and screening rods, the rotational movement of the motor is converted into the reciprocating movement of the mesh buttons. Through this movement, the sieve holes continuously change during the screening process; also, the chain rod penetrates through the mesh buttons and is connected to the chain structure, increasing the stability of the chain mesh structure and the coordination of the movement, ensuring the uniformity of the change of the sieve holes; thus solving the problem of powder blockage existing in structures such as fixed sieves and vibrating sieves in the prior art; realizing that the dynamic sieve holes actively "push open" the blocked powder by periodically adjusting the gap, maintaining the continuity and stability of screening. The dynamic change of the sieve holes accelerates the passing of the powder, and the processing capacity per unit time increases significantly. Description of the Drawings

[0016] Figure 1 It is an axonometric structural schematic diagram of the screening device of the present invention;

[0017] Figure 2Another axonometric structural schematic diagram of the screening device of the present invention;

[0018] Figure 3 Front view of the screening device of the present invention;

[0019] Figure 4 Structural schematic diagram of the screening component of the present invention;

[0020] Figure 5 Partial structural schematic diagram of the screening component of the present invention;

[0021] Figure 6 Structural schematic diagram of the fixing plate;

[0022] Figure 7 Structural schematic diagram of the chain structure;

[0023] Figure 8 Cooperating structural schematic diagram of the transmission rod and the cam of the present invention;

[0024] Figure 9 Schematic diagram of the chain mesh structure of the present invention;

[0025] Figure 10 Structural schematic diagram of the screening rod of the present invention.

[0026] Reference signs:

[0027] 1 - Frame, 2 - Feed hopper, 3 - Screening component, 4 - Batching hopper, 5 - Mixing component, 6 - Diverting port;

[0028] 51 - Material discharging structure, 52 - Discharge port;

[0029] 31 - Chain structure;

[0030] 311 - Outer link, 312 - Inner link;

[0031] 32 - Chain mesh structure;

[0032] 321 - Mesh buckle, 322 - Chain rod;

[0033] 33 - Transmission structure;

[0034] 331 - Fixing plate, 332 - Transmission rod, 333 - Screening rod, 334 - Cam, 335 - Slot hole, 336 - Moving hole, 337 - Limit pin, 338 - Return spring.

[0035] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement conditions, etc. between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0040] Embodiment 1:

[0041] Please refer to the attached Figures 1 to 10, Embodiment 1 of the present invention provides a basalt splitting and screening device, including a frame 1, on which a feed hopper 2 is arranged. A screening assembly 3 is arranged inside the feed hopper 2. The screening assembly 3 includes a chain structure 31 arranged in parallel, a chain mesh structure 32 arranged between the chain structures 31, and a transmission structure 33. The chain mesh structure 32 includes a number of mesh buttons 321 connected movably. The gaps between the plurality of mesh buttons 321 serve as sieve holes. The screening assembly 3 is used to complete the screening process by realizing the movement between the mesh buttons 321 through the transmission structure 33.

[0042] When devices such as vibrating screens in the prior art perform splitting and screening, irregular basalt powder is likely to be blocked in the sieve holes of fixed sizes, which greatly affects the screening efficiency. On the basis of the above problems, the applicant improves the traditional fixed sieve mesh into a number of mesh buttons 321 connected movably. As Figure 9 shown, each mesh button 321 is linked together to form the chain mesh structure 32. It can be understood that the gaps between the mesh buttons 321 can serve as sieve holes. When the chain mesh structure 32 is shaken by an external force, the gaps between the mesh buttons 321 will change significantly. When the basalt powder is blocked in the sieve holes, with the external force brought by the transmission structure 33, the whole chain mesh structure 32 will undergo dynamic changes. For example, the mesh buttons 321 at the positions around the sieve holes with blockage problems can still generate displacements, thereby enlarging the sieve holes to solve the blockage problem of the basalt powder on the sieve holes. In this process, the maximum gap between the mesh buttons 321 is smaller than the minimum particle size to be screened. It can also be understood that the transmission structure 33 in this embodiment can be a vibrating screen in the prior art, and the screening assembly 3 is directly installed on the vibrating screen to solve the problem of sieve hole blockage caused by the fixed sieve mesh. For the chain structure 31, it serves as the connection and support structure between the screening assemblies 3 and can generate corresponding angular changes.

[0043] In this embodiment, there are also the following preferred structures. Specifically, the chain mesh structure 32 further includes chain rods 322 penetrating between the mesh buttons 321. Both ends of the chain rods 322 penetrate the chain structure 31. The transmission structure 33 includes a fixing plate 331, a number of transmission rods 332, and a number of screening rods 333. The fixing plate 331 is fixedly connected to the inner side of the feed hopper 2. The number of transmission rods 332 are all rotatably arranged on the fixing plate 331. The screening rods 333 are slidably arranged inside the fixing plate 331. Cams 334 are arranged on the transmission rods 332. One end of the screening rod 333 is connected to the chain rod 322, and the other end of the screening rod 333 is always in contact with the cam 334.

[0044] It should be noted that since all the link-net structures 32 are interconnected through the net buttons 321, and there is still a lack of a corresponding skeleton structure under the support of the flexible chain structure 31. During the screening process of basalt powder, the powder structure tends to gather at the center of the link-net structure 32. Therefore, the link rods 322 pass through the net buttons 321 movably and are connected to the chain structure 31. It can be understood that a motor is provided on the frame 1, and the motor is used as the power source for the screening operation. The output end of the motor is preferably connected to the gear on the transmission rod 332 through structures such as a speed reducer, such as in the form of a chain drive. When the motor is started, the transmission rod 332 is driven to rotate on the fixed plate 331 through a toothed chain or the like, and the cam 334 fixedly connected to the transmission rod 332 rotates synchronously. In addition, the screening rod 333 slidably connected in the fixed plate 331 reciprocates through the cam 334. At this time, the reset of the reciprocating movement is achieved through the pressure of the link-net structure 32 and the basalt powder on the screening rod 333. Based on the relative movement generated between the net buttons 321 of the link-net structure 32, the reciprocating movement of the screening rod 333 is realized by driving the rotation of the cam 334 in the transmission structure 33 by the motor, and then the reciprocating movement of the link rod 322 is driven by the reciprocating movement of the screening rod 333, thereby stably realizing the relative movement between the net buttons 321, that is, the screening process of the basalt powder.

[0045] It should also be noted that the overall performance of the above structure is to make the link-net structure 32 generate irregular movements in a three-dimensional environment through the transmission structure 33, rather than a traditional fixed sieve mesh or structures such as a vibrating sieve. Through the synergistic effect of the dynamic link-net structure 32 and the cam 334 - screening rod 333 transmission system, the problems of easy blockage and poor adaptability of the traditional fixed sieve mesh in the screening of basalt powder are solved. Specifically, the link-net structure 32 is composed of movably connected net buttons 321, and its gaps form dynamic sieve holes. The screening rod 333 is driven to reciprocate through the cam 334 in the transmission structure 33, driving the link rods 322 and the net buttons 321 to periodically adjust the size of the sieve hole gaps, actively breaking the powder blockage; the rigid connection between the chain structure 31 and the link rods 322 ensures the uniformity of the sieve hole changes, and the return spring 338 and the limit pin 337 ensure the accurate reset of the screening rod 333, reducing mechanical losses. The self-adaptive adjustment of the sieve holes is realized, significantly improving the screening efficiency and continuity. At the same time, it can flexibly adapt to the powder requirements of different particle sizes, and enhances the stability and durability of the equipment operation through structural optimization.

[0046] Embodiment 2:

[0047] As an optional implementation manner, a batching hopper 4 and a mixing assembly 5 are further provided on the frame 1, and the feed hopper 2 is communicated with the batching hopper 4 and the mixing assembly 5. A weighing structure and a feeding structure 51 are provided at the upper end of the mixing assembly 5, and a discharge port 52 is provided at the lower end of the mixing assembly 5.

[0048] In this embodiment, a material distribution port 6 is provided on one side of the screening assembly, and a magnetic coil is provided in the feed hopper 2.

[0049] It should be noted that in the process of preparing continuous basalt fibers, the crushed basalt powder needs to be subjected to magnetic separation and screening before batching. In the existing process, different devices are used to complete this, which greatly increases the complexity of the process. Based on the above structure, the applicant proposes to integrate the screening device and the batching device in this embodiment. By adding a batching hopper 4 communicating with the feed hopper 2 on the frame 1, and both the feed hopper 2 and the mixing hopper are communicated with the mixing assembly 5. For the feeding structure 51, its preferred structure is a controllable valve provided in the feeding channel of the mixing assembly 5, such as a pneumatic butterfly valve or a rotary valve. The weighing structure is preferably a mass sensor, which is arranged inside the controllable valve. It can also be a flowmeter, a volume meter, etc. In one screening process, after the screened basalt powder reaches the quality threshold through the weighing structure, the screening stops, and the proportion is put in through the batching hopper 4, and the mixing process is completed in the mixing assembly 5. In this process, the basalt powder can be first put into the mixing assembly 5 through the feeding structure 51, and then the ingredients are weighed through the weighing structure and then put into the mixing assembly 5.

[0050] It should also be noted that by integrating the batching hopper 4, the mixing assembly 5 and the magnetic coil, the problems of inaccurate raw material ratio, uneven mixing and magnetic impurities in the screening process of basalt powder are solved. Specifically, the batching hopper 4 is communicated with the mixing assembly 5, and the raw material ratio is accurately controlled through the weighing structure. The feeding structure 51 realizes automatic feeding to ensure the uniformity of material mixing; the magnetic coil provided in the feed hopper 2 can pre-adsorb ferromagnetic impurities in the basalt powder to avoid impurities entering the subsequent process and causing equipment wear or finished product contamination; combined with the attachment Figure 1 , the material distribution port 6 on one side of the screening assembly classifies and collects the screened powders with different particle sizes, improving the material management efficiency. This embodiment optimizes the raw material pretreatment and post-treatment processes, realizes precise proportioning, efficient removal of impurities and orderly sorting of the screened materials, and significantly improves the raw material purity and process stability of the continuous basalt fiber preparation.

[0051] For the mixing assembly 5, its preferred structure is a pneumatic fluidized mixer or a ribbon mixer, etc.

[0052] Embodiment 3:

[0053] As an alternative embodiment, a slot hole 335 is provided on the screening rod 333, a movable hole 336 is provided on the fixing plate 331, a limiting pin 337 cooperating with the slot hole 335 is provided in the movable hole 336, a return spring 338 is provided on the outer periphery of the screening rod 333, and both ends of the return spring 338 are respectively abutted against the fixing plate 331 and the screening rod 333.

[0054] Based on the above structure, different from the sliding process of the screening rod 333 on the fixed plate 331 in the previous embodiment, in this embodiment, the screening rod 333 can generate an angular deflection along the side surface of the fixed plate 331 through structures such as the slot hole 335 and the limit pin 337. Its movement process can be understood as the swing of both ends of the screening rod 333. Since one end of the screening rod 333 is always in contact with the cam 334 through the return spring 338, the other end will show the movement of the link rod 322 and the chain structure 31. By means of setting the slot hole 335 on the screening rod 333, setting the limit pin 337 on the fixed plate 331 that cooperates with the slot hole 335, and setting the return spring 338 on the outer periphery of the screening rod 333, the movement range between the mesh buttons 321 is increased, and the stability and accuracy of the movement of the screening rod 333 during the screening process are solved. Specifically, when the screening rod 333 reciprocates under the action of the transmission structure 33, the cooperation between the slot hole 335 and the limit pin 337 enables the screening rod 333 to generate an angular deflection along the side surface of the fixed plate 331. This deflection movement not only increases the movement amplitude of the screening rod 333, but also enables the screening rod 333 to more effectively drive the link rod 322 and the mesh button 321 to perform periodic adjustments during the movement process, thereby realizing the dynamic change of the sieve hole gap. At the same time, the setting of the return spring 338 ensures that the screening rod 333 can be accurately reset after completing a reciprocating movement, reduces mechanical wear, and improves the stability and durability of the equipment. Through this structural design, the self-adaptive adjustment of the sieve holes is realized, significantly improving the screening efficiency and continuity. At the same time, it can flexibly adapt to the powder requirements of different particle sizes, further optimizing the screening process and ensuring the stability and reliability of the screening effect.

[0055] Embodiment 4:

[0056] As an alternative embodiment, there is an angular difference in the initial positions of the cams 334 in the transmission structure 33, and the minimum angular difference is 45°.

[0057] It should be noted that in the above structure, due to the angular difference in the initial positions of the cams 334 in the transmission structure 33, the link rod 322 will generate irregular swings during the movement process. This irregular movement causes the size and shape of the sieve holes to continuously change during the screening process, further enhancing the self-cleaning ability of the sieve holes. Specifically, when the sieve holes are blocked, the irregular movement of the link rod 322 can generate additional impact force to help loosen and discharge the blocked powder, thereby reducing the risk of sieve hole blockage. In addition, the irregular movement can also cause changes in the sieve holes in different directions, increasing the chance of powder passing through the sieve holes, improving the uniformity and accuracy of screening. This irregular movement can also adapt to powders of different particle sizes, ensuring the flexibility and adaptability of the screening process.

[0058] Example 5:

[0059] As an alternative implementation, the chain structure 31 includes outer chain links 311 and inner chain links 312 that are sequentially and intermittently movable, and the link rod 322 movably penetrates through the inner chain link 312.

[0060] In this embodiment, every four adjacent link rods 322 form a screening unit. The angular difference corresponding to the initial position of the cam 334 within the screening unit is 90°, and along the direction of the chain structure 31, when the cam 334 is at the midpoint of its stroke, the lower end face of the inner chain link 312 is horizontal.

[0061] It should be noted that based on the above structure, in the process of solving the problem of sieve hole blockage in the existing sieve, the technical solution in this embodiment is also used to solve the problem of discharging the powder that cannot pass through the sieve holes, that is, the powder is separated synchronously while avoiding sieve hole blockage. Specifically, the above structure enables the chain mesh structure 32 to form a wave-like movement during transmission, thereby realizing the dynamic adjustment of the sieve holes, effectively avoiding the blockage of the powder in the sieve holes, and improving the screening efficiency and continuity. More specifically, the wave-like movement causes the sieve holes to continuously change during the screening process, which can not only actively "push open" the blocked powder, but also accelerate the speed of the powder passing through the sieve holes, significantly increasing the processing capacity per unit time, while ensuring the uniformity of the sieve hole changes and improving the stability of the screening quality.

[0062] In addition, the wave-like movement increases the dynamic change range of the sieve holes, enabling the sieve holes to be adjusted in different directions and angles, further improving the self-cleaning ability of the sieve holes and reducing the risk of sieve hole blockage. Secondly, this movement mode enables the chain mesh structure 32 to generate more vibrations and impacts during the screening process, which helps to loosen and separate the powder adhering to the sieve holes, further improving the screening efficiency and accuracy. In addition, the wave-like movement can also cause the sieve holes to form different screening paths during the screening process, increasing the contact opportunity between the powder and the sieve holes, and improving the uniformity and consistency of the screening.

[0063] Example 6:

[0064] As an alternative implementation, a screening method is provided, including the following steps: After starting the screening device, put the crushed basalt powder into the feed hopper 2, and complete the screening process of the basalt powder through the sieve holes of the screening assembly 3.

[0065] In this embodiment, the screening process specifically includes: The mesh buttons 321 within the chain mesh structure 32 generate a movement process through the transmission structure 33. The mesh buttons 321 during the movement process act as sieve holes to screen the basalt powder, and the powder that does not meet the sieve hole particle size is discharged through the movement process of the mesh buttons 321 to complete the screening process.

[0066] For the overall screening process, it can be divided into a feeding stage, a screening stage, a separation stage, and a mixing stage. For the feeding stage, the crushed basalt powder enters the screening device through the feeding hopper 2. A magnetic coil is arranged inside the feeding hopper 2 to pre-adsorb ferromagnetic impurities in the powder, avoiding the entry of impurities into subsequent processes. This step can refer to the magnetic separator in the prior art. For the screening stage, the powder enters the screening assembly 3. The screening assembly 3 includes a chain structure 31, a chain mesh structure 32, and a transmission structure 33 arranged in parallel. The chain mesh structure 32 is composed of a number of movably connected mesh buttons 321. The gap between the mesh buttons 321 serves as a sieve hole. The transmission structure 33 converts the rotational motion of the motor into the reciprocating motion of the mesh buttons 321 through a cam 334 and a screening rod 333, causing the sieve holes to continuously change during the screening process. The chain rod 322 passes through the mesh buttons 321 and is connected to the chain structure 31, increasing the stability of the chain mesh structure 32 and the coordination of the motion, and realizing the process of screening the basalt powder meeting the particle size requirements into the mixing assembly 5. For the separation stage, the mesh buttons 321 generate motion driven by the transmission structure 33. The sieve holes continuously change during the motion, actively "pushing open" the blocked powder. For example, the overall chain mesh structure 32 moves in a wave-like manner, conveying the materials on the chain mesh structure 32 to the material separation port 6 to maintain the continuity and stability of screening. The powder that does not meet the sieve hole particle size is discharged through the motion process of the mesh buttons 321, completing the screening. For the mixing stage, the screened basalt powder enters the mixing assembly 5 through the material separation port 6. A weighing structure and a feeding structure 51 are arranged at the upper end of the mixing assembly 5. The feeding structure 51 drops the powder into the mixing assembly 5. After the weighing structure weighs the ingredients, the ingredients are dropped into the mixing assembly 5 to complete the mixing process. An outlet 52 is arranged at the lower end of the mixing assembly 5. The mixed powder is discharged through the outlet 52.

[0067] It should also be noted that during the above screening process, the transmission rod 332 is driven to rotate through structures such as a speed reducer. The cam 334 on the transmission rod 332 rotates synchronously. The cam 334 drives the screening rod 333 to reciprocate. The screening rod 333 drives the chain rod 322 to reciprocate, thereby causing relative motion of the mesh buttons 321, and the sieve holes continuously change during the motion; when the transmission rod 332 rotates, the cam 334 rotates synchronously. The cam 334 drives the screening rod 333 to reciprocate. One end of the screening rod 333 is connected to the chain rod 322, and the other end abuts against the cam 334. The reciprocating movement of the screening rod 333 is realized through the rotation of the cam 334; the screening rod 333 reciprocates under the action of the transmission structure 33. Through the cooperation of the slot hole 335 and the limit pin 337, the screening rod 333 can generate an angular deflection along the side surface of the fixed plate 331. The reciprocating movement of the screening rod 333 drives the chain rod 322 to reciprocate, thereby causing a larger range of relative motion of the mesh buttons 321.

[0068] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A basalt separation and screening device, comprising a frame, characterized in that, A feed hopper is arranged on the frame. A screening component is arranged in the feed hopper. The screening component includes a chain structure arranged in parallel, a chain mesh structure arranged between the chain structures, and a transmission structure. The chain mesh structure includes a number of mesh buttons connected movably. The gaps between the number of mesh buttons serve as sieve holes. The screening component is used to complete the screening process by realizing the movement between the mesh buttons through the transmission structure.

2. The basalt split screening device according to claim 1, characterized in that, The chain mesh structure further includes chain rods penetrating between the mesh buttons. Both ends of the chain rods penetrate the chain structure. The transmission structure includes a fixed plate, a number of transmission rods, and a number of screening rods. The fixed plate is fixedly connected to the inner side of the feed hopper. The number of transmission rods are all rotatably arranged on the fixed plate. The screening rods are slidably arranged in the fixed plate. Cams are arranged on the transmission rods. One end of the screening rod is connected to the chain rod, and the other end of the screening rod always abuts against the cam.

3. The basalt split screening device according to claim 1, characterized in that, A batching hopper and a mixing component are further arranged on the frame. And the feed hopper is communicated with the batching hopper and the mixing component. A weighing structure and a feeding structure are arranged at the upper end of the mixing component. An outlet is arranged at the lower end of the mixing component.

4. The basalt split screening device according to claim 2, characterized in that, Slot holes are arranged on the screening rods. Moving holes are arranged on the fixed plate. Limit pins matched with the slot holes are arranged in the moving holes. A return spring is arranged on the outer periphery of the screening rod. Both ends of the return spring abut against the fixed plate and the screening rod respectively.

5. The basalt splitting and screening device according to claim 3, wherein, A material distribution port is arranged on one side of the screening component. A magnetic coil is arranged in the feed hopper.

6. A basalt split screening device according to claim 2 or 4, characterized in that, There is an angular difference in the initial positions of the cams in the transmission structure, and the minimum angular difference is 45°.

7. A basalt split screening device according to claim 4, characterized in that, The chain structure includes outer chain links and inner chain links that are movably spaced in sequence. The chain rods movably penetrate through the inner chain links.

8. The basalt split screening device according to claim 7, wherein, Adjacent four chain rods form a screening unit. The angular difference corresponding to the initial positions of the cams in the screening unit is 90°. And along the direction of the chain structure, when the cams are at the midpoint of the stroke, the lower end surfaces of the inner chain links are horizontal.

9. A screening method, characterized in that, A basalt split screening device according to any one of claims 3 to 8 includes the following steps: After starting the screening device, put the crushed basalt powder into the feed hopper, and complete the screening process of the basalt powder through the sieve holes of the screening component.

10. A screening method according to claim 9, characterized in that, The screening process specifically includes: The mesh buttons in the chain mesh structure generate a movement process through the transmission structure. The mesh buttons during the movement process serve as sieve holes to screen the basalt powder. The powder that does not meet the particle size of the sieve holes is discharged through the movement process of the mesh buttons to complete the screening process.

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