Asynchronous eccentric transmission specific gravity screening machine

Abstract

The invention relates to the technical field of agricultural equipment, and provides an asynchronous eccentric transmission specific gravity screening machine which comprises a vibration seat obliquely arranged on a base, a screening bed is arranged on the vibration seat, the vibration seat is longitudinally provided with a longitudinal high end and a longitudinal low end, the vibration seat is transversely provided with a transverse high end and a transverse low end, and a driving shaft is rotationally arranged on the base. The rotating axis of the driving shaft is parallel to the longitudinal direction of the screening bed; the two cam sleeves are arranged at the two ends of the driving shaft correspondingly. The first transmission rod is provided with a first end and a second end, the first end is rotationally arranged on one cam sleeve, and the second end is arranged at the longitudinal high end and is higher than the first end; the second transmission rod is provided with a third end and a fourth end, the third end is rotationally arranged on the other cam sleeve, and the fourth end is arranged at the longitudinal low end and higher than the third end. According to the technical scheme, the problem that the service life of the whole machine is affected due to large weight of a vibration seat in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural equipment, and in particular to a specific gravity screening machine with asynchronous eccentric transmission. Background Art

[0002] The specific gravity screening machine is mainly used for screening seeds such as wheat, corn, rice, and soybean. The specific gravity screening machine has a certain inclination angle in the length and width directions of the screen bed, which are usually called the longitudinal inclination angle and the lateral inclination angle respectively. When working, the screen bed vibrates back and forth under the action of the transmission mechanism, and the seeds fall on the screen bed. Under the action of the airflow of the fan below, the seeds on the table are stratified.

[0003] In the prior art, the specific gravity screening machine is connected between the screen bed and the base through a vibrating seat, and a vibration rod is respectively arranged at both ends of the longitudinal direction of the vibrating seat. The vibration rod cooperates with the eccentric structure to drive the vibrating seat to vibrate, and the vibration rod has a certain angle along the transverse direction of the vibrating seat. Since the two vibration rods are driven by a common transmission shaft, in order to ensure the synchronous vibration of the two ends of the vibrating seat, the two ends of the vibration rod at both ends of the vibrating seat are usually arranged in parallel, which leads to different heights at both ends of the vibrating seat. The height of the lower end in the longitudinal direction of the vibrating seat needs to be determined by the height of the inclined vibration rod. When the longitudinal inclination angle of the vibrating seat remains unchanged, the higher end in the longitudinal direction of the vibrating seat will need a higher support component, thereby increasing the overall weight of the screen bed and the vibrating seat, increasing the load of the transmission components and the support components, and being detrimental to the stability and service life of the whole machine. Summary of the invention

[0004] The present invention provides a specific gravity screening machine with asynchronous eccentric transmission, which solves the problem in the related art that the heavy weight of the vibration base affects the service life of the whole machine.

[0005] The technical solution of the present invention is as follows: A specific gravity screening machine with asynchronous eccentric transmission, comprising a vibrating seat obliquely arranged on a base, a sieve bed arranged on the vibrating seat, the vibrating seat having a longitudinal high end and a longitudinal low end in the longitudinal direction, and a transverse high end and a transverse low end in the transverse direction, and further comprising: a drive shaft rotatably disposed on the base, wherein a rotation axis of the drive shaft is parallel to a longitudinal direction of the sieve bed; There are two cam sleeves, which are respectively arranged at two ends of the driving shaft; A first transmission rod having a first end and a second end, wherein the first end is rotatably disposed on one of the cam sleeves, and the second end is disposed on the longitudinal high end, and the second end is higher than the first end; The second transmission rod has a third end and a fourth end, wherein the third end is rotatably disposed on another cam sleeve, and the fourth end is disposed at the longitudinal lower end, the fourth end is higher than the third end, the first end is at the same height as the third end, and the second end is higher than the fourth end.

[0006] Optionally, after the driving shaft rotates, the highest points of the protrusions of the two cam sleeves are respectively and simultaneously oriented toward the axes of the first transmission rod and the second transmission rod.

[0007] Optionally, the vibration seat comprises: There are a plurality of elastic support members, one end of each of which is disposed on the base; A front end vibrating member is arranged at the other end of the elastic supporting member, the second end is arranged on the front end vibrating member, and the front end vibrating member has the transverse high end and the transverse low end; a rear end vibrating member, arranged at the other end of the elastic supporting member, the fourth end being arranged on the rear end vibrating member, the rear end vibrating member having the transverse high end and the transverse low end, the front end vibrating member and the rear end vibrating member being respectively located at two sides of the longitudinal direction of the sieve bed; A rotating frame is rotatably arranged on the rear end vibration member, and the sieve bed is arranged on the rotating frame. After the rotating frame rotates, the vertical distance between the transverse high end and the transverse low end becomes larger or smaller.

[0008] Optionally, the rear end vibrator has a circular hole and several adjustment holes, the front end vibrator has several adjustment holes, both ends of the rotating frame have several fixing holes, the rotating frame rotates around the circular hole, and the axis of the fixing hole is parallel to the axis of the circular hole.

[0009] Optionally, the circular hole is located at the lateral lower end of the rear end vibrating member.

[0010] Optionally, the sieve bed comprises: A metal frame, arranged on the rotating frame; A metal frame, arranged on the metal frame; There are a plurality of wooden support beams, each of which is arranged in the metal frame and is distributed in sequence along the longitudinal direction of the metal frame; A screen is arranged on the metal frame, the screen is located between the metal frame and the metal frame, the wooden support beam is used to support the screen, and the screen and the metal frame constitute a material screening space; An air uniforming plate is arranged on the metal frame, the air uniforming plate is located between the metal frame and the screen, and the air uniforming plate has a plurality of ventilation holes.

[0011] Optionally, it also includes: A connecting piece, one end of which is arranged on the metal frame, and the other end of which is arranged on the wooden support beam, and the metal frame and the wooden support beam are arranged through the connecting piece.

[0012] Optionally, the sieve bed has a feed end and a discharge end, and further comprises: A guide table is arranged at the discharge end, and the height of the guide table gradually decreases along the direction from the feed end to the discharge end of the sieve bed. The guide table is used to guide the material on the sieve bed out; A finished product dividing plate is rotatably arranged on the guide platform, and the rotation axis of the finished product dividing plate is perpendicular to the guide platform; A defective product separation plate is rotatably arranged on the guide table, and the rotation axis of the defective product separation plate is perpendicular to the guide table. The finished product separation plate and the defective product separation plate respectively separate the materials on the guide table into defective materials, medium-quality materials, and finished products. The rotation axes of the finished product separation plate and the defective product separation plate are both located at one end of the guide table away from the sieve bed.

[0013] Optionally, it also includes: There is at least one auxiliary dividing plate, which is rotatably arranged on the guide platform. The rotation axis of the auxiliary dividing plate is closer to the sieve bed than the rotation axis of the finished product dividing plate, and the auxiliary dividing plate is located between the finished product dividing plate and the defective product dividing plate. After the finished product dividing plate and the auxiliary dividing plate rotate, the finished product dividing plate abuts against one of the auxiliary dividing plates.

[0014] Optionally, it also includes: A material receiving device, located at one side of the material discharging end, and used for receiving the material dropped from the guide platform; There are two partitions, both of which are arranged in the material receiving device. The two partitions are used to separate the material receiving device into a finished product space, a medium-quality space and a defective product space. The finished product space, the medium-quality space and the defective product space are used to receive the finished material, the medium-quality material and the defective material respectively.

[0015] There are two first rotating members, which are rotatably arranged on the guide table. The finished product dividing plate and the defective product dividing plate are respectively slidably arranged on one of the first rotating members. The sliding directions of the finished product dividing plate and the defective product dividing plate are both radial directions of the first rotating member. The finished product dividing plate and the defective product dividing plate are respectively rotatably arranged on the guide table through two first rotating members. Along the feed end to the discharge end of the sieve bed, the two partitions are respectively located in a straight line with the rotation axes of the two first rotating members.

[0016] The working principle and beneficial effects of the present invention are: In the present invention, the driving shaft rotates on the base, driving the cam sleeves at both ends to rotate. The cam sleeve, the first connecting rod and the second connecting rod cooperate with each other to make the vibration seat vibrate. Since the second end is higher than the fourth end, the first transmission rod located on the longitudinal high end side of the vibration seat has a greater inclination angle relative to the ground than the second transmission rod located on the longitudinal low end side of the vibration seat. Thus, the first transmission rod and the second transmission rod are adapted to the height of the longitudinal high end and the longitudinal low end respectively, avoiding the problem of the overall height of the vibration seat being too high due to the parallelism of the first transmission rod and the second transmission rod, thereby reducing the overall weight of the vibration seat and the sieve bed.

[0017] The non-parallel arrangement of the first transmission rod and the second transmission rod effectively solves the problem in the related art that the vibration base is too high and too heavy, thus affecting the service life of the whole machine. First, the unique structure reduces the overall height of the vibration base, reduces the overall weight of the vibration base, significantly reduces the load on the transmission components and support components, and greatly extends the service life of the whole machine. Secondly, it reduces the loss and maintenance cost of the equipment, enhances the stability and reliability of the equipment, and effectively guarantees the continuity and stability of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 A top view of the present invention; Figure 3 For the present invention Figure 2 Middle AA section view; Figure 4 For the present invention Figure 3 The enlarged structural diagram at E in the middle; Figure 5 For the present invention Figure 2 Middle BB section view; Figure 6 It is a structural schematic diagram of the rear end vibration member of the present invention; Figure 7 It is a schematic structural diagram of the front end vibration member of the present invention; Figure 8 This is a schematic diagram of the structure of the rotating frame of the present invention; Fig. 9 It is a schematic diagram of the structure of the sieve bed and the material receiving device of the present invention; Fig.10 It is a schematic cross-sectional view of the sieve bed and the material receiving device of the present invention; Fig.11 For the present invention Fig.10The enlarged structural diagram at G in the middle; Fig.12 For the present invention Figure 2 Enlarged structural diagram at D in the middle.

[0020] In the figure: 100, base, 200, vibration seat, 300, sieve bed, 201, longitudinal high end, 202, longitudinal low end, 203, lateral high end, 204, lateral low end, 400, drive shaft, 500, cam sleeve, 600, first transmission rod, 610, first end, 620, second end, 700, second transmission rod, 710, third end, 720, fourth end, 800, elastic support member, 210, front end vibration member, 220, rear end vibration member , 230, rotating frame, 221, round hole, 205, adjustment hole, 231, fixing hole, 310, metal frame, 320, metal frame, 330, wooden support beam, 340, screen, 350, air uniformity plate, 360, connecting piece, 370, feed end, 380, discharge end, 391, guide table, 392, finished product separation board, 393, defective product separation board, 394, auxiliary separation board, 900, material receiving device, 910, partition, 395, first rotating member. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0022] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0023] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Reference Figure 1 to Figure 12 The present invention proposes a specific gravity screening machine with asynchronous eccentric transmission, comprising a vibration seat 200 tiltedly arranged on a base 100, a sieve bed 300 arranged on the vibration seat 200, the vibration seat 200 having a longitudinal high end 201 and a longitudinal low end 202 in the longitudinal direction, and the vibration seat 200 having a transverse high end 203 and a transverse low end 204 in the transverse direction, and also comprising a driving shaft 400, the driving shaft 400 being rotatably arranged on the base 100, and the rotation axis of the driving shaft 400 being parallel to the longitudinal direction of the sieve bed 300; two cam sleeves 500, respectively arranged at the two ends of the driving shaft 400; a first transmission rod 600 It has a first end 610 and a second end 620, the first end 610 is rotatably set on one of the cam sleeves 500, the second end 620 is set on the longitudinal high end 201, and the second end 620 is higher than the first end 610; the second transmission rod 700 has a third end 710 and a fourth end 720, the third end 710 is rotatably set on another of the cam sleeves 500, the fourth end 720 is set on the longitudinal low end 202, and the fourth end 720 is higher than the third end 710, the first end 610 and the third end 710 are at the same height, and the second end 620 is higher than the fourth end 720.

[0026] In this embodiment, the driving shaft 400 rotates on the base 100, driving the cam sleeves 500 at both ends to rotate. The cam sleeve 500, the first connecting rod and the second connecting rod cooperate with each other to make the vibration seat 200 vibrate. Since the second end 620 is higher than the fourth end 720, the first transmission rod 600 located on the side of the longitudinal high end 201 of the vibration seat 200 has a greater inclination angle relative to the ground than the second transmission rod 700 located on the side of the longitudinal low end 202 of the vibration seat 200. Therefore, the first transmission rod 600 and the second transmission rod 700 are adapted to the height of the longitudinal high end 201 and the longitudinal low end 202 respectively, avoiding the problem of the overall height of the vibration seat 200 being too high due to the parallelism of the first transmission rod 600 and the second transmission rod 700, thereby reducing the overall weight of the vibration seat 200 and the sieve bed 300.

[0027] The non-parallel arrangement of the first transmission rod 600 and the second transmission rod 700 effectively solves the problem in the related art that the vibration base 200 is too high and too heavy, thus affecting the service life of the whole machine. First, the unique structure reduces the overall height of the vibration base 200, reduces the overall weight of the vibration base 200, significantly reduces the load of the transmission components and the supporting components, and greatly extends the service life of the whole machine. Secondly, it reduces the loss and maintenance cost of the equipment, enhances the stability and reliability of the equipment, and effectively guarantees the continuity and stability of production.

[0028] It should be further explained that the longitudinal direction refers to the direction of the material on the sieve bed 300 from entering the sieve bed 300 to leaving the sieve bed 300, and the transverse direction refers to the direction perpendicular to the longitudinal direction, that is, the direction of grading the material on the sieve bed 300. Since the sieve bed 300 is disposed on the base 100 through the vibration seat 200, the longitudinal and transverse directions of the vibration seat 200 are the same as the longitudinal and transverse directions of the sieve bed 300.

[0029] Furthermore, after the driving shaft 400 rotates, the highest points of the protrusions of the two cam sleeves 500 are directed toward the axes of the first transmission rod 600 and the second transmission rod 700 at the same time.

[0030] In this embodiment, when the drive shaft 400 starts to rotate, the two cam sleeves 500 rotate accordingly. The protrusions of the two cam sleeves 500 are not synchronized. Every time the drive shaft 400 rotates one circle, the highest points of the protrusions of the two cam sleeves 500 will face the axes of the first connecting rod and the second connecting rod at the same time. There is a certain angle between the protrusions of the two cam sleeves 500, and the angle between the protrusions of the two cam sleeves 500 is the same as the angle between the first transmission rod 600 and the second transmission rod 700.

[0031] The asynchronous feature of the raised portion of the cam sleeve 500 ensures that the longitudinal high end 201 and the longitudinal low end 202 of the vibration seat 200 are synchronously vibrated when the first linkage rod and the second linkage rod are not parallel, thereby ensuring the stability of the entire vibration seat 200. It should be further explained that due to the different inclination angles of the first linkage rod and the second linkage rod, during the rotation of the cam sleeve 500, there will be a certain error in the lateral offset of the vibration seat 200. During installation, the raised size of each raised portion of the cam sleeve 500 can be determined separately according to the actual situation on site.

[0032] In this way, firstly, the stability and consistency of the vibration of the vibration seat 200 can be further enhanced, and the elastic support between the vibration seat 200 and the base 100 can be prevented from wearing out too quickly. Secondly, the energy loss in the transmission process is reduced, the operation efficiency of the equipment is improved, and the energy consumption is reduced. Finally, it helps to reduce the wear and vibration noise of the equipment, extend the service life of the equipment, and improve the overall performance of the equipment.

[0033] Further, the vibration seat 200 includes an elastic support member 800, and there are a plurality of elastic support members 800, one end of each of the plurality of elastic support members 800 is disposed on the base 100; a front end vibration member 210 is disposed at the other end of the elastic support member 800, and a second end 620 is disposed on the front end vibration member 210, and the front end fixed member 220 has a transverse high end 203 and a transverse low end 204; a rear end vibration member 220 is disposed at the other end of the elastic support member 800, and a fourth end 720 is disposed on the rear end vibration member 220, and the rear end vibration member 220 has a transverse high end 203 and a transverse low end 204, and the front end vibration member 210 and the rear end vibration member 220 are respectively located on both sides of the longitudinal direction of the sieve bed 300; a rotating frame 230 is rotatably disposed on the rear end vibration member 220, and the sieve bed 300 is disposed on the rotating frame 230, and after the rotating frame 230 rotates, the vertical distance between the transverse high end 203 and the transverse low end 204 increases or decreases.

[0034] In this embodiment, the plurality of elastic support members 800 not only provide stable and elastic support for the vibration base 200, but also guide the vibration direction of the vibration base 200. The main body of the vibration base 200 is divided into a front vibration member 210, a rear vibration member 220 and a rotating frame 230. The front vibration member 210 and the rear vibration member 220 are respectively located on both sides of the longitudinal direction of the sieve bed 300. The front vibration member 210 and the rear vibration member 220 are connected to the base 100 through the elastic support member 800. The cam sleeve 500 drives the front vibration member 210 and the rear vibration member 220 to vibrate through the first transmission rod 600 and the second transmission rod 700. There is no connection relationship between the first transmission rod 600 and the second transmission rod 700 and the rotating frame 230, so that the rotating frame 230 can adjust the lateral inclination angle by rotation.

[0035] In actual use, when the lateral inclination angle of the vibration base 200 needs to be changed, the lateral inclination angle of the vibration base 200 can be changed by simply rotating the rotating frame 230, while the fixed positions of the two ends of the first transmission rod 600 and the second transmission rod 700 will not change, thereby improving the convenience of adjusting the lateral inclination angle of the vibration base 200.

[0036] Furthermore, the rear end vibrator 220 has a circular hole 221 and several adjustment holes 205, the front end vibrator 210 has several adjustment holes 205, and the two ends of the rotating frame 230 have several fixing holes 231. The rotating frame 230 rotates around the circular hole 221, and the axis of the fixing hole 231 is parallel to the axis of the circular hole 221.

[0037] In this embodiment, when the lateral inclination angle of the vibration seat 200 needs to be adjusted, the rotating frame 230 rotates around the circular hole 221 of the rear end vibrating member 220, and the relative angles of the rotating frame 230 relative to the front end vibrating member 210 and the rear end vibrating member 220 are changed. After the rotating frame 230 rotates, the front end vibrating member 210 and the rear end vibrating member 220 jointly support the rotating frame 230 to avoid the rotating frame 230 being too long and reducing the overall rigidity. Since the adjustment hole 205 is an arc hole, during the rotation of the rotating frame 230, each fixing hole 231 can always coincide with an adjustment hole 205. When the angle adjustment is completed, a bolt is passed through a fixing hole 231 and an adjustment hole 205, and then the rotating frame 230 is fixed to the front end vibrating member 210 and the rear end vibrating member 220 by a nut. When in actual use, the operator only needs to use a wrench to tighten or loosen the nuts connecting the rotating frame 230 with the front vibrating member 210 and the rear vibrating member 220, and then rotate the rotating frame 230 around the circular hole 221 to adjust the angle of the vibration seat 200.

[0038] This arrangement greatly improves the convenience of operation. The operator does not need to rely on specific tooling to change the fixed position of the first transmission rod 600 and the second transmission rod 700, which simplifies the adjustment steps and saves time and labor costs. Secondly, the lateral inclination angle of the vibration seat 200 can be adjusted more quickly and accurately to adapt to different material screening requirements, thereby improving the efficiency and quality of screening. Furthermore, this simple adjustment method reduces the difficulty of operation and technical requirements, and reduces the risk of equipment damage and failure caused by improper operation.

[0039] Furthermore, the circular hole 221 is located at the lateral lower end 204 of the rear end vibration member 220 .

[0040] In this embodiment, the rotation axis of the rotating frame 230 is located at the lateral lower end 204 of the rear end vibrating member 220. The lateral inclination angle of the vibration base 200 is adjusted from the lowest end of the entire vibration base 200. On the one hand, it can prevent the rotating frame 230 from colliding with the base 100 due to operational errors. On the other hand, the rotation is more stable and balanced, which is conducive to accurately controlling the adjustment amplitude and angle. Finally, this layout method saves more space than other methods, making the overall device more compact.

[0041] Further, the sieve bed 300 includes a metal frame 310, which is arranged on the rotating frame 230; a metal frame 320 is arranged on the metal frame 310; there are a plurality of wooden support beams 330, which are all arranged in the metal frame 310, and the plurality of wooden support beams 330 are distributed in sequence along the longitudinal direction of the metal frame 310; a screen 340 is arranged on the metal frame 310, the screen 340 is located between the metal frame 320 and the metal frame 310, and the wooden support beams 330 are used to support the screen 340, and the screen 340 and the metal frame 320 constitute a material screening space; a uniform air plate 350 is arranged on the metal frame 310, the uniform air plate 350 is located between the metal frame 310 and the screen 340, and the uniform air plate 350 has a plurality of ventilation holes.

[0042] In this embodiment, the metal frame 310 and the metal frame 320 provide a solid structural foundation, ensuring the overall stability and durability of the sieve bed 300. Secondly, while supporting the screen 340, the wooden support beam 330 not only has a certain elasticity and buffering effect compared to metal materials, which can reduce damage to the material and reduce vibration and noise during operation, but also the use of the wooden support beam 330 reduces the overall weight of the sieve bed 300 relative to the metal support beam, and reduces the load on the drive shaft 400. Furthermore, the material screening space composed of the screen 340 and the metal frame 320 can effectively screen the material and ensure the accuracy and efficiency of the screening. Finally, the setting of the air uniformity plate 350 and the several ventilation holes thereon help to evenly distribute the airflow, improve the air selection effect, and further improve the quality and performance of the screening.

[0043] Furthermore, a connecting piece 360 ​​is included, one end of the connecting piece 360 ​​is arranged on the metal frame 310 , and the other end of the connecting piece 360 ​​is arranged on the wooden support beam 330 . The metal frame 310 and the wooden support beam 330 are arranged through the connecting piece 360 ​​.

[0044] In this embodiment, the metal frame 310 and the wooden support beam 330 are connected together by the connecting piece 360. First, the processing step of opening the card interface is omitted, the production process is simplified, the production efficiency is improved, and the production cost is reduced. Secondly, the problem of local strength weakening of the metal frame 310 or the wooden support beam 330 due to the opening of the card interface is avoided, the overall strength of the sieve bed 300 is significantly improved, and the stability and reliability of the sieve bed 300 at work are enhanced. Furthermore, the errors and defects in the processing links are reduced, and the quality consistency of the product is improved. Finally, this simple connection method makes the maintenance and replacement of parts of the sieve bed 300 more convenient, which is conducive to the long-term stable operation of the equipment.

[0045] Furthermore, the sieve bed 300 has a feed end 370 and a discharge end 380, and also includes a guide table 391, which is arranged at the discharge end 380. Along the direction from the feed end 370 to the discharge end 380 of the sieve bed 300, the height of the guide table 391 gradually decreases, and the guide table 391 is used to guide the material on the sieve bed 300; a finished product separation plate 392 is rotatably arranged on the guide table 391, and the rotation axis of the finished product separation plate 392 is perpendicular to the guide table 391; a defective separation plate 393 is rotatably arranged on the guide table 391, and the rotation axis of the defective separation plate 393 is perpendicular to the guide table 391. The finished product separation plate 392 and the defective separation plate 393 respectively separate the material on the guide table 391 into defective material, medium-quality material, and finished material, and the rotation axes of the finished product separation plate 392 and the defective separation plate 393 are both located at the end of the guide table 391 away from the sieve bed 300.

[0046] In this embodiment, the material enters the sieve bed 300 from the feed end 370, and after being stratified on the sieve bed 300, enters the guide table 391, and under the action of the finished product separation plate 392 and the defective product separation plate 393, according to the position of the material on the sieve bed 300, flows out from between the finished product separation plate 392 and the metal frame 320 close to the finished product separation plate 392, between the finished product separation plate 392 and the defective product separation plate 393, and between the defective product separation plate 393 and the metal frame 320 close to the defective product separation plate 393, and is divided into finished material, medium-quality material and defective material.

[0047] The finished product dividing plate 392 and the defective product dividing plate 393 are both rotatably arranged on the guide platform. By rotating the finished product dividing plate 392 and the defective product dividing plate 393, the spacing between the finished product dividing plate 392 and the metal frame 320 near the finished product dividing plate 392, between the finished product dividing plate 392 and the defective product dividing plate 393, and between the defective product dividing plate 393 and the metal frame 320 near the defective product dividing plate 393 can be adjusted, thereby adjusting the discharge amount of finished materials, medium-quality materials, and defective materials. The rotation axis of the finished product dividing plate 392 and the defective product dividing plate 393 is located at one end of the guide platform 391 away from the sieve bed 300, which can increase the adjustment range of the finished product dividing plate 392 and the defective product dividing plate 393, and avoid the accumulation of a large amount of one of the finished materials, medium-quality materials, or defective materials, thereby affecting the screening efficiency and screening quality.

[0048] Furthermore, the auxiliary dividing plate 394 is included. There is at least one auxiliary dividing plate 394, which is rotatably arranged on the guide platform 391. The rotation axis of the auxiliary dividing plate 394 is closer to the sieve bed 300 than the rotation axis of the finished product dividing plate 392. The auxiliary dividing plate 394 is located between the finished product dividing plate 392 and the defective product dividing plate 393. After the finished product dividing plate 392 and the auxiliary dividing plate 394 rotate, the finished product dividing plate 392 abuts against one of the auxiliary dividing plates 394.

[0049] In this embodiment, for example, if the amount of finished materials is large, a longer finished material dividing plate 392 is required. However, if the finished material dividing plate 392 is too long, the finished material dividing plate 392 will interfere with the metal frame 320 after being rotated. The auxiliary dividing plate 394 is only arranged between the finished material dividing plate 392 and the inferior material dividing plate 393 during use. When the outlet of the finished materials needs to be increased, the auxiliary dividing plate 394 and the finished material dividing plate 392 can be rotated so that the auxiliary dividing plate 394 and the finished material dividing plate 392 are connected in a straight line, and the auxiliary dividing plate 394 increases the length of the finished material dividing plate 392. When the finished material dividing plate 392 is rotated to the other side to reduce the outlet of the finished materials, the finished material dividing plate 392 will not interfere with the metal frame 320 due to its long length. When the auxiliary dividing plate 394 is not in use, the two sides of the auxiliary dividing plate 394 do not contact other components and will not affect the passage of the medium-quality materials.

[0050] By adding the auxiliary dividing plate 394, the accuracy and flexibility of material classification can be improved to meet more complex screening requirements. Secondly, by abutting with the finished product dividing plate 392, a clearer separation boundary is formed, and the adjustment range of the finished product dividing plate 392 and the defective product dividing plate 393 is improved.

[0051] When two auxiliary dividing plates 394 are provided, one auxiliary dividing plate 394 abuts against the finished product dividing plate 392, and the other auxiliary dividing plate 394 can abut against the defective dividing plate 393. When multiple auxiliary dividing plates 394 are provided, the redundant auxiliary dividing plates 394 can selectively abut against the finished product dividing plate 392 and the defective dividing plate 393, and the auxiliary dividing plates 394 that do not abut against the finished product dividing plate 392 and the defective dividing plate 393 will not affect the material.

[0052] Furthermore, it also includes a material receiving device 900, which is located on one side of the discharge end 380, and is used to receive the material dropped from the guide platform 391; there are two partitions 910, both of which are arranged in the material receiving device 900, and the two partitions 910 are used to separate the material receiving device 900 into a finished product space, a medium-quality space and a defective product space, and the finished product space, the medium-quality space and the defective space are used to receive the finished material, the medium-quality material and the defective material, respectively. There are two first rotating members 395, which are rotatably arranged on the guide platform 391. The finished product dividing plate 392 and the defective product dividing plate 393 are respectively slidably arranged on one of the first rotating members 395. The sliding directions of the finished product dividing plate 392 and the defective product dividing plate 393 are both radial directions of the first rotating members 395. The finished product dividing plate 392 and the defective product dividing plate 393 are respectively rotatably arranged on the guide platform 391 through the two first rotating members 395. Along the feed end 370 to the discharge end 380 of the sieve bed 300, the two partitions 910 are respectively located in a straight line with the rotation axes of the two first rotating members 395.

[0053] In this embodiment, the arrangement of the receiving device 900 and the partition 910 realizes the orderly acceptance and classified storage of materials of different qualities, and improves the orderliness of material processing. The finished product separation plate 392 and the defective product separation plate 393 are respectively slidably arranged on a rotating frame 230. The operator rotates and adjusts the finished product separation plate 392 and the defective product separation plate 393 by rotating the rotating frame 230. Through the sliding of the finished product separation plate 392 and the defective product separation plate 393, the adjustment amount of the finished product separation plate 392 and the defective product separation plate 393 can be further improved.

[0054] The corresponding arrangement of the partition plate 910 and the rotation axis of the first rotating member 395 ensures the accurate falling and classification of the materials and reduces the possibility of misclassification of the materials.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A specific gravity screening machine with asynchronous eccentric transmission, comprising a vibrating seat (200) obliquely arranged on a base (100), a sieve bed (300) arranged on the vibrating seat (200), the vibrating seat (200) having a longitudinal high end (201) and a longitudinal low end (202) in the longitudinal direction, and the vibrating seat (200) having a transverse high end (203) and a transverse low end (204) in the transverse direction, characterized in that: Also includes: a drive shaft (400) rotatably disposed on the base (100), wherein the rotation axis of the drive shaft (400) is parallel to the longitudinal direction of the sieve bed (300); There are two cam sleeves (500), which are respectively arranged at two ends of the driving shaft (400); A first transmission rod (600) having a first end (610) and a second end (620), wherein the first end (610) is rotatably disposed on one of the cam sleeves (500), and the second end (620) is disposed at the longitudinal high end (201), and the second end (620) is higher than the first end (610); The second transmission rod (700) has a third end (710) and a fourth end (720), wherein the third end (710) is rotatably disposed on another cam sleeve (500), and the fourth end (720) is disposed at the longitudinal lower end (202), and the fourth end (720) is higher than the third end (710), the first end (610) and the third end (710) are at the same height, and the second end (620) is higher than the fourth end (720).

2. The asynchronous eccentric transmission specific gravity screening machine according to claim 1, characterized in that: After the driving shaft (400) rotates, the highest points of the raised portions of the two cam sleeves (500) face the axes of the first transmission rod (600) and the second transmission rod (700) respectively and simultaneously.

3. The specific gravity screening machine with asynchronous eccentric transmission according to claim 1, characterized in that: The vibration seat (200) comprises: There are a plurality of elastic support members (800), and one end of each of the plurality of elastic support members (800) is disposed on the base (100); A front end vibrating member (210) is arranged at the other end of the elastic supporting member (800), the second end (620) is arranged on the front end vibrating member (210), and the front end vibrating member (210) has the transverse high end (203) and the transverse low end (204); a rear end vibrating member (220) disposed at the other end of the elastic support member (800), the fourth end (720) being disposed on the rear end vibrating member (220), the rear end vibrating member (220) having the transverse high end (203) and the transverse low end (204), the front end vibrating member (210) and the rear end vibrating member (220) being respectively located on both sides of the longitudinal direction of the sieve bed (300); A rotating frame (230) is rotatably disposed on the rear end vibrating member (220), and the sieve bed (300) is disposed on the rotating frame (230). After the rotating frame (230) rotates, the vertical distance between the transverse high end (203) and the transverse low end (204) increases or decreases.

4. The specific gravity screening machine with asynchronous eccentric transmission according to claim 3, characterized in that: The rear end vibration member (220) has a circular hole (221) and a plurality of adjustment holes (205), the front end vibration member (210) has a plurality of adjustment holes (205), and the two ends of the rotating frame (230) have a plurality of fixing holes (231). The rotating frame (230) rotates around the circular hole (221), and the axis of the fixing hole (231) is parallel to the axis of the circular hole (221).

5. The specific gravity screening machine with asynchronous eccentric transmission according to claim 4, characterized in that: The circular hole (221) is located at the lateral lower end (204) of the rear end vibration member (220).

6. The asynchronous eccentric transmission specific gravity screening machine according to claim 3, characterized in that: The sieve bed (300) comprises: A metal frame (310) is arranged on the rotating frame (230); A metal frame (320) is arranged on the metal frame (310); There are a plurality of wooden support beams (330), wherein the plurality of wooden support beams (330) are all arranged in the metal frame (310), and the plurality of wooden support beams (330) are sequentially distributed along the longitudinal direction of the metal frame (310); a screen (340) disposed on the metal frame (310); the screen (340) is located between the metal frame (320) and the metal frame (310); the wooden support beam (330) is used to support the screen (340); the screen (340) and the metal frame (320) constitute a material screening space; An air uniforming plate (350) is arranged on the metal frame (310); the air uniforming plate (350) is located between the metal frame (310) and the screen (340); the air uniforming plate (350) has a plurality of ventilation holes.

7. The asynchronous eccentric transmission specific gravity screening machine according to claim 6, characterized in that: Also includes: A connecting piece (360) has one end arranged on the metal frame (310) and the other end arranged on the wooden support beam (330); the metal frame (310) and the wooden support beam (330) are arranged via the connecting piece (360).

8. The asynchronous eccentric transmission specific gravity screening machine according to claim 1, characterized in that: The sieve bed (300) has a feed end (370) and a discharge end (380), and further comprises: a flow guide platform (391) disposed at the discharge end (380), the height of the flow guide platform (391) gradually decreasing along the direction from the feed end (370) to the discharge end (380), and the flow guide platform (391) is used to guide the material on the sieve bed (300); A finished product dividing plate (392) is rotatably disposed on the guide platform (391), wherein the rotation axis of the finished product dividing plate (392) is perpendicular to the guide platform (391); The defective product separation plate (393) is rotatably arranged on the guide platform (391), and the rotation axis of the defective product separation plate (393) is perpendicular to the guide platform (391). The finished product separation plate (392) and the defective product separation plate (393) respectively separate the materials on the guide platform (391) into defective materials, medium-quality materials, and finished materials. The rotation axes of the finished product separation plate (392) and the defective product separation plate (393) are both located at one end of the guide platform (391) away from the sieve bed (300).

9. The specific gravity screening machine with asynchronous eccentric transmission according to claim 8, characterized in that: Also includes: The auxiliary dividing plate (394) has at least one auxiliary dividing plate (394) which is rotatably arranged on the guide platform (391); the rotation axis of the auxiliary dividing plate (394) is closer to the sieve bed (300) than the rotation axis of the finished product dividing plate (392); and the auxiliary dividing plate (394) is located between the finished product dividing plate (392) and the defective product dividing plate (393); after the finished product dividing plate (392) and the auxiliary dividing plate (394) rotate, the finished product dividing plate (392) abuts against one of the auxiliary dividing plates (394).

10. The asynchronous eccentric transmission specific gravity screening machine according to claim 9, characterized in that: Also includes: A material receiving device (900) is located at one side of the material discharging end (380), and the material receiving device (900) is used to receive the material dropped from the guide platform (391); There are two partitions (910), both of which are arranged in the material receiving device (900), and the two partitions (910) are used to separate the material receiving device (900) into a finished product space, a medium-quality space, and a defective product space, and the finished product space, the medium-quality space, and the defective product space are used to receive the finished material, the medium-quality material, and the defective material, respectively; The first rotating member (395) has two parts, which are rotatably arranged on the guide platform (391); the finished product dividing plate (392) and the defective product dividing plate (393) are respectively slidably arranged on one of the first rotating members (395); the sliding directions of the finished product dividing plate (392) and the defective product dividing plate (393) are both radial directions of the first rotating member (395); the finished product dividing plate (392) and the defective product dividing plate (393) are respectively rotatably arranged on the guide platform (391) through the two first rotating members (395); and along the feed end (370) to the discharge end (380), the two partitions (910) are respectively located on a straight line with the rotation axes of the two first rotating members (395).

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