Belt type conveying screening machine

Abstract

The utility model relates to the technical field of screening, in particular to a belt type conveying and screening machine which comprises a fixing frame body, a conveying and screening belt, a vibrating knockout and a material guide plate, the conveying and screening belt, the vibrating knockout and the material guide plate are arranged in the fixing frame body, the conveying and screening belt comprises a screening belt, screening holes are formed in the belt face of the screening belt, and the vibrating knockout and the material guide plate are arranged in the fixing frame body. The screening belt is divided into an ascending screening belt body and a descending screening belt body, the vibration knockout device is arranged between the ascending screening belt body and the descending screening belt body, and a material guide plate is arranged below the ascending screening belt body. The vibrating screen has the advantages that the fixing frame body is free of vibration, vibration energy consumption is small, the requirement for exciting force is reduced, vibration load is small, the power of a vibration power source is reduced, and the screening effect is good. The vibration screening cost is reduced, the screening quality is high, the screening effect is good, overall sealing and upper cover sealing during operation are achieved, dust overflowing is greatly reduced, and the surrounding ecological environment is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of screening, especially a belt type conveying and screening machine. BACKGROUND

[0002] The vibrating screening machine is a mechanical equipment for material grading, screening, filtering or dewatering, and is widely used in mining, metallurgy, chemical industry, building materials and food industry. It realizes the separation of materials with different particle sizes by vibrating the materials on the screen surface. The vibrating screening machine generates periodic vibration through a vibrating power source or an exciter, and the screen box and screen mesh vibrate accordingly. The material enters the screen box from the feed inlet and, under the action of vibration, the material smaller than the screen mesh aperture falls to the lower layer through the screen mesh; the material larger than the screen mesh aperture moves forward along the screen surface and is finally discharged from the discharge outlet. The conventional vibrating screening machine is blocked by the screen mesh due to the large material viscosity or high water content, the excitation force of the vibrating power source is insufficient, the vibrating power source loads the vibrating screening machine as a whole, the load is too large and the consumption is too high, the vibrating power source and the shock-absorbing spring are easily damaged and need to be replaced frequently. In addition, due to the certain angle between the screening vibration amplitude and the material running route, the vibration amplitude is affected, the vibration frequency is insufficient, the screening efficiency is low, the screening quality is poor, the screening cost is high, and the workload of personnel is large.

[0003] The Chinese invention patent with the authorized announcement number CN112691902B discloses a belt type screening and conveying device for a vibrating screen. The device is fixedly installed on the screen box of the vibrating screen. The drum shafts at both ends of the driven drum are fixed on the side plates at the discharge end of the screen box of the vibrating screen, the drum shafts at both ends of the driving drum are fixed on the side plates at the feed end of the screen box of the vibrating screen, and a plurality of screening belts are sleeved on the driving drum and the driven drum. Each upward screening belt is mounted on the spacer sleeve of the upper carrier roller assembly, and each downward screening belt is alternately mounted on the upper and lower lower carrier rollers. The gap between each screening belt mounted on the lower carrier roller assembly is larger than the gap between each screening belt mounted on the upper carrier roller assembly. The advantages are that the holes are not blocked, the screening efficiency is high, the throughput can be independently controlled, the vibrating screen's participation in vibration is reduced, and the overall service life of the vibrating screen is improved. However, the vibrating power source in the patent needs to drive the entire belt type conveying device and the screen box to vibrate together, which requires a large excitation force and a large power of the vibrating power source, resulting in high cost. In addition, the screening is performed by splicing and staggering a plurality of screening belts, the gap distance between the screening belts cannot be guaranteed, the screening of needle-shaped and flaky material particles cannot be controlled, and the screening belt is greatly worn after being washed twice by the material to reach the bottom.

[0004] The utility model discloses a small -size caterpillar formula vibrating screen separator "a small -size caterpillar formula vibrating screen separator discloses a small -size caterpillar formula vibrating screen separator, including power car and the screening mechanism of setting on power car, the screening mechanism includes frame, screen body, feed belt conveyor, lower discharge belt conveyor, feed bin, a plurality of collapsible belt conveyors, vibration power source, screen body installs in frame, and vibration power source installs on screen body, and feed belt conveyor and lower discharge belt conveyor are installed on the upper portion and lower portion of vibrating screen respectively, and feed bin installs on feed belt conveyor, and collapsible belt conveyor one end installs on frame, and the other end is folded and placed on the top of frame when not working, and collapsible belt conveyor is used to transport the material that screen body screening comes out, and frame is equipped with control panel, and the advantage is simple structure, and reasonable in design, and small, and low cost, and low energy consumption, and high working efficiency, and when the scene is changed, does not need to dismantle, and transportation is convenient, and the speed of entering the field and the speed of putting into production are fast, but the screening machine and the belt conveyor are arranged separately in the patent among most screening machines, and the conveying of the material in the screening machine adopts the inclination of a certain angle of the screening box, and the exciting force of vibration power source is decomposed, and the energy supply of vibration power source is weakened, and the required rated power of vibration power source is improved, and the cost is high, and the energy efficiency is low, and the screening efficiency is low, and the screening quality is poor, and the screening cost is high, and the workload of personnel is big. Practical new type content

[0005] In order to overcome the deficiency of prior art, the utility model provides a belt type conveying screening machine, the hole is opened on the conveying belt with certain width, forms the screening belt with the screen function of the hole type, and the vibration knock ware is arranged below the uplink screening belt, the uplink screening belt produces vibration when passing above the vibration knock ware, the material on the uplink screening belt is vibrated and screened in the process of conveying, the material less than the screen hole is screened out by the vibration knock ware and slides out of the material along the guide plate, and the material greater than the screen hole is discharged from the material discharge end, the vibration screening only vibrates the screening belt, and other structures have no vibration, the screening belt is closed loop and continuously rotated in the belt type conveying screening machine, realizes the conveying of material and screening of material simultaneously.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A belt type conveying and screening machine, comprising a fixed frame, a conveying and screening belt, a vibrating knock-off device, a guide plate and a reverse guide plate, the fixed frame is provided with the reverse guide plate at the lower part, the fixed frame is internally provided with the conveying and screening belt, the vibrating knock-off device and the guide plate, the conveying and screening belt comprises a screening belt, the belt surface of the screening belt is provided with screening holes, the screening belt is divided into an upward screening belt and a downward screening belt, the vibrating knock-off device is arranged between the upward screening belt and the downward screening belt, the vibrating knock-off device comprises a vibrating power source, a damping spring, a vibrating hammer wheel and a vibrating frame, the vibrating frame fixes the vibrating power source, the vibrating hammer wheel and the damping spring, the vibrating power source is uniformly arranged in several numbers along the material conveying direction, the damping spring is arranged in several numbers on the front and back of the two sides of the vibrating power source, the vibrating hammer wheel is in contact with the lower surface of the upward screening belt along the material conveying direction, and the guide plate is arranged below the upward screening belt.

[0008] Further, the belt type conveying and screening machine further comprises a feeding chute, an upper cover and a material blocking plate, the upper cover is arranged at the top of the fixed frame, the feeding chute is arranged at the top of the fixed frame on the feeding side of the upward screening belt, and the material blocking plate is arranged on the two sides of the upward screening belt along the material conveying direction.

[0009] Further, the conveying and screening belt further comprises a driving wheel, a motor, a driven wheel, a redirection wheel, a compensation tensioning device and a supporting wheel assembly, the driving wheel, the driven wheel, the redirection wheel and the screening belt form a conveying closed loop, the supporting wheel assembly is arranged on the lower belt surface of the downward screening belt, and the compensation tensioning device is provided with a spring buffer device.

[0010] Further, the movable end of the damping spring is fixed on the vibrating frame, and the fixed end of the damping spring is fixed on the fixed frame.

[0011] Further, the fixed frame is provided with a discharge port I and a discharge port II, the discharge port I is arranged below the discharging position, and the discharge port II is arranged at the bottom end of the reverse guide plate.

[0012] Further, the guide plate is arranged in a herringbone shape below the upward screening belt, and the material passes over the downward screening belt to the two sides along the herringbone guide plate surface.

[0013] Further, the vibration parameters of the screening belt are as follows: G=3-5g, wherein G is vertical acceleration, and g is gravity acceleration.

[0014] Further, the angle between the conveying direction of the screening belt and the vibration direction of the vibrating knock-off device is 75-105 degrees.

[0015] Compared with the prior art, the belt type conveying and screening machine has the following beneficial effects:

[0016] 1) the vibration knock-off device weight accounts for about 1 / 3 of the device weight, the overall operation energy consumption is reduced by half compared with the whole vibration screening product, the vibration knock-off device only vibrates the screening belt, the outer fixed frame body has no vibration, the vibration energy consumption is small, the exciting force demand is reduced, the vibration load is small, the vibration power source power is reduced, the vibration screening cost is reduced, the screening quality is high, and the screening effect is good.

[0017] 2) the vibration direction of the vibration knock-off device is close to perpendicular to the conveying direction of the screening belt, the exciting force of the vibration power source is transmitted to the screening belt screening material, the screening efficiency is high, and the screening effect is good.

[0018] 3) except the screening belt, other shell structures do not participate in vibration, it is easier to realize overall sealing, the upper cover is sealed during operation, dust overflow is greatly reduced, the surrounding ecological environment is protected, the screening environment is improved, safety, energy saving and environmental protection are realized.

[0019] 4) the vibration mass is small, the bearing load requirement of the device foundation is small, the screening belt horizontally conveys materials, the height requirement of the screening space is reduced, the length requirement of the feeding belt is reduced, the supporting facility cost is saved, the screening machine structure is compact, and the cost is reduced.

[0020] 5) the vibration power source is controlled by frequency conversion, the working efficiency is improved, the material screening effect is good, and intelligent control can be realized.

[0021] 6) since only the screening belt vibrates to screen materials, when large-scale screening equipment is made, the existing bearing limit speed and bearing capacity are not considered, large-scale, multi-layer screening equipment is realized, and large-scale production operation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the sectional view of the belt type conveying and screening machine structure.

[0023] Figure 2 It is the side view of the belt type conveying and screening machine structure.

[0024] Figure 3 It is the front view (one) of the belt type conveying and screening machine structure.

[0025] Figure 4 It is the front view (two) of the belt type conveying and screening machine structure.

[0026] Figure 5 It is the schematic view of the screening belt mechanism.

[0027] In the figure: 1, up-screening belt; 2, material blocking plate; 3, screening hole; 4, material; 5, vibration direction; 6, vibration frame, 7, vibration hammer body wheel; 8, conveying direction; 9, vibration knock; 10, driving wheel; 11, motor base; 12, vibration power source; 13, shock absorbing spring; 14, driven wheel; 15, material guide plate; 16, small particle material falling direction; 17, upper cover; 18, fixed frame body; 19, supporting wheel assembly; 20, reverse material guide plate; 21, down-screening belt; 22, feeding chute; 23, motor; 24, compensation tensioning device; 25, reversing wheel; 26, discharge port one; 27, discharge port two. DETAILED DESCRIPTION

[0028] The specific embodiment of the utility model will be further described below in combination with the drawings:

[0029] As Figures 1-5 shown, the working principle of the belt type conveying screening machine is as follows: the vibration power source 12 of the vibration knock 9 vibrates, the vibration power source 12 drives the vibration frame 6 to vibrate, the vibration hammer body wheel 7 on the vibration frame 6 vibrates the up-screening belt 1, the material 4 on the up-screening belt 1 falls in the vibration process, the material 4 smaller than the screening hole passes through the screening hole 3 on the screening belt, the small particle material falling direction 16 is along the board surface of the herringbone material guide plate 15, and the material is gathered by the reverse material guide plate 20 after passing through the two sides of the down-screening belt 21 and then discharged through the discharge port two 27, and the material 4 larger than the screening hole 3 is conveyed by the screening belt rotation and discharged through the discharge port one 26 of the discharge position.

[0030] Example 1: as Figures 1-3 , Figure 5As shown, a belt type conveying and screening machine comprises a fixed frame 18, a conveying and screening belt, a vibrating beater 9, a guide plate 15 and a reverse guide plate 20, the fixed frame 18 is provided with the reverse guide plate 20 at the lower part, the reverse guide plate 20 is arranged below the conveying and screening belt to gather the small particle materials 4 falling from the guide plate 15, the fixed frame 18 is internally provided with the conveying and screening belt, the vibrating beater 9 and the guide plate 15, the conveying and screening belt comprises a screening belt which is mainly made of rubber conveying belt, polyurethane material or chain plate and the like, can be made into one-time formed closed loop belt, or can be made in segments and connected by means of adhesive or using string pin shaft, belt clamp and the like, the belt surface of the screening belt is provided with screening holes 3, the screening belt is divided into an upward screening belt 1 and a downward screening belt 21, the screening belt is wound around the driving wheel 10 and the driven wheel 14 to form a closed circuit, the upward screening belt 1 conveying the materials 4 is above the driving wheel 10, the return belt below the driving wheel 10 is the downward screening belt 21, the vibrating beater 9 is arranged between the upward screening belt 1 and the downward screening belt 21, the vibrating beater 9 comprises a vibrating power source 12, a damping spring 13, a vibrating hammer wheel 7 and a vibrating frame 6, the vibrating frame 6 fixes the vibrating power source 12, the vibrating hammer wheel 7 and the damping spring 13, the vibrating power source 12 is evenly arranged in several numbers along the material 4 conveying direction 8, a plurality of damping springs 13 are arranged on both sides of one vibrating power source 12, a plurality of vibrating hammer wheels 7 are arranged in contact with the lower surface of the upward screening belt 1 along the material 4 conveying direction 8, the vibrating beater 9 vibrates and beats on the lower surface of the upward screening belt 1, the upward screening belt 1 vibrates, the materials 4 on the upward screening belt 1 pass through the screening holes 3 and fall down under the action of vibration, the materials 4 smaller than the screening holes 3 pass through the screening holes 3 to realize the screening of the materials 4, the power of the vibrating power source 12 of the vibrating beater 9 can be provided by eccentric body rotation, mechanical lifting mechanism, hydraulic pressure or electromagnetic force and the like, the vibrating motor of the vibrating power source 12 realizes variable frequency speed control, the vibrating power source 12 is fixed on the vibrating frame 6 through the motor base 11, the vibrating hammer wheel 7 of the vibrating beater 9 directly contacts with the lower surface of the upward screening belt 1, the contact surface of the vibrating hammer wheel 7 and the upward screening belt 1 is a rolling curved surface, which rolls without hindering the conveying and transmission of the materials 4 by the screening belt while transmitting the exciting force, the guide plate 15 is arranged below the upward screening belt 1, the guide plate 15 is arranged below the upward screening belt 1 and fixed on the vibrating frame 6, the two side plate surfaces of the guide plate 15 pass over the downward screening belt 21 below, the falling materials 4 pass over the downward screening belt 21 from the two side plate surfaces of the guide plate 15 and fall into the reverse guide plate 20, and then are discharged from the discharge port two 27, the return downward screening belt 21 does not receive the falling materials 4, thus does not store materials to affect the rotation of the screening belt, reduces the wear of the screening belt, and also does not need to drive the whole conveying and screening belt to vibrate, reduces the demand for exciting force and the power demand of the vibrating power source 12.

[0031] AsFigures 2-3 As shown, the belt conveyor screening machine further includes a feed chute 22, a top cover 17, and a baffle plate 2. The top cover 17 is set on the top of the fixed frame 18. The fixed frame 18 does not participate in the screening vibration, making it easier to close the top cover 17 and reduce dust overflow. The feed chute 22 is set on the top of the fixed frame 18 on the feeding side of the upward screening belt 1. The baffle plate 2 is set on both sides of the upward screening belt 1 along the material 4 conveying direction.

[0032] like Figure 3 As shown, further, the drive wheel 10, driven wheel 14, redirecting wheel 25 and the screening belt of the conveyor screening belt form a closed conveying loop; the drive wheel 10 and the motor 23 are set at the discharge position, the driven wheel 14 is set at the feed position, the support roller assembly 19 is set on the lower surface of the downward screening belt 21, and the compensation tensioning device 24 is a spring buffer device set on the downward screening belt 21.

[0033] like Figures 1-3 As shown, the movable end of the damping spring 13 is fixed on the vibration frame 6, and the fixed end of the damping spring 13 is fixed on the fixed frame body 18. The vibration frame 6 vibrates with the vibration power source 12. One end of the damping spring 13 on the vibration frame 6 is fixed on the fixed frame body 18, and the other end is connected to the vibration frame 6, so as to dampen the vibration of the vibration frame 6 and improve its service life.

[0034] like Figure 3 As shown, further, the bottom of the fixed frame 18 is provided with a discharge port 1 26 and a discharge port 27. The discharge port 1 26 is located below the discharge position, and the discharge port 27 is located at the bottom of the reverse guide plate 20. The top of the discharge port 27 is provided with a reverse guide plate 20 to collect the falling small particles 4, which can reduce the size of the discharge port 27 and realize the multi-stage arrangement of the belt conveyor screening machine. At the same time, due to different processing volumes and site environments, when the belt conveyor screening machine requires a long screen surface, a belt conveyor is provided at the bottom, and the reverse guide plate 20 can reduce the length of the discharge port 27, making discharge convenient.

[0035] like Figure 2 As shown, the guide plate 15 is arranged in a herringbone shape below the upper screening belt 1, and the material 4 is discharged to both sides along the surface of the herringbone guide plate across the lower screening belt 21.

[0036] Furthermore, the vibration parameters of the screening belt are: G = 3~5g, where G is the vertical acceleration and g is the gravitational acceleration. The main vibrations of the vibration power source 12 are the upward screening belt 1 and the material 4. Therefore, the power acting on the upward screening belt 1 is large, which makes the vertical acceleration of the material 4 greater than 3g. The vibration amplitude of the material 4 is large, and the screening effect is good.

[0037] Further, the angle between the conveying direction 8 of the screening belt and the vibration direction 5 of the vibration knockers is 75°-105°, the vibration direction 5 of the vibration power source 12 is almost perpendicular to the conveying direction 8 of the screening belt, and the exciting force is almost entirely transmitted to the material 4 on the belt surface, thereby improving the screening efficiency and achieving good screening effect.

[0038] Example 2: as Figures 1-2 , Figures 4-5As shown, a belt type conveying and screening machine comprises a fixed frame 18, a conveying and screening belt, a vibration knock 9, a guide plate 15 and a reverse guide plate 20, the fixed frame 18 is provided with the reverse guide plate 20 at the lower part, the reverse guide plate 20 is arranged below the conveying and screening belt, and gathers the small particle materials 4 falling from the guide plate 15 above, the fixed frame 18 is internally provided with the conveying and screening belt, the vibration knock 9 and the guide plate 15, the conveying and screening belt comprises a screening belt, which is mainly made of rubber conveying belt, polyurethane material or chain plate and the like, and can be made into a one-time formed closed loop belt, or can be made in segments and connected through gluing or using string pin shaft, belt clamp and the like, the belt surface of the screening belt is provided with screening holes 3, the screening belt is divided into an upward screening belt 1 and a downward screening belt 21, the screening belt is sleeved between a driving wheel 10 and a driven wheel 14 to form a closed circuit, the upward screening belt 1 conveying the materials 4 is above the driving wheel 10, and the return belt below the driving wheel 10 is the downward screening belt 21, the vibration knock 9 is arranged between the upward screening belt 1 and the downward screening belt 21, the vibration knock 9 comprises a vibration power source 12, a damping spring 13, a vibration hammer wheel 7 and a vibration frame 6, the vibration frame 6 fixes the vibration power source 12, the vibration hammer wheel 7 and the damping spring 13, the vibration power source 12 is evenly arranged in several numbers along the material 4 conveying direction 8, a plurality of damping springs 13 are arranged on the two sides of one vibration power source 12, a plurality of vibration hammer wheels 7 are arranged in contact with the lower surface of the upward screening belt 1 along the material 4 conveying direction 8, the vibration knock 9 vibrates and knocks on the lower surface of the upward screening belt 1, the upward screening belt 1 vibrates, the materials 4 on the upward screening belt 1 pass through the screening holes 3 and fall down under the action of vibration, so as to realize the screening of the materials 4, the power of the vibration power source 12 of the vibration knock 9 can be provided by eccentric body rotation, mechanical jacking mechanism, hydraulic pressure or electromagnetic force and the like, the vibration motor of the vibration power source 12 realizes variable frequency speed control, the vibration power source 12 is fixed on the vibration frame 6 through a motor base 11, the vibration hammer wheel 7 of the vibration knock 9 directly contacts with the lower surface of the upward screening belt 1, the contact surface of the vibration hammer wheel 7 and the upward screening belt 1 is a rolling curved surface, which rolls without hindering the conveying of the materials 4 while transmitting the exciting force, the guide plate 15 is arranged below the upward screening belt 1, the guide plate 15 is arranged below the upward screening belt 1 and fixed on the vibration frame 6, the two side plate surfaces of the guide plate 15 pass over the downward screening belt 21 below, the falling materials 4 pass over the downward screening belt 21 from the two side plate surfaces of the guide plate 15 and fall into the reverse guide plate 20, and then are discharged from a discharge port two 27, the return downward screening belt 21 does not receive the falling materials 4, so as not to store materials and affect the rotation of the screening belt, reduce the wear of the screening belt, and also do not need to drive the whole conveying and screening belt to vibrate, reduce the demand for exciting force, and reduce the power demand of the vibration power source 12.

[0039] AsFigure 2 、 Figure 4 As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4.

[0040] As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4. Figure 4 As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4.

[0041] As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4. Figure 1 As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4. Figure 4 As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4.

[0042] As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4. Figure 4 As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4.

[0043] As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4. Figure 2 As shown in the drawings, further, the belt type conveying and screening machine further comprises a feeding chute 22, an upper cover 17 and a material blocking plate 2. The upper cover 17 is arranged on the top of the fixed frame body 18, the fixed frame body 18 does not participate in the screening vibration, and the upper cover 17 is easier to be closed, thereby reducing dust overflow. The feeding chute 22 is arranged on the top of the fixed frame body 18 at the feeding side of the upward screening belt 1. The material blocking plate 2 is arranged on both sides of the upward screening belt 1 along the conveying direction of the material 4.

[0044] Further, the vibration parameter of the screening belt: G=3-5g, G is vertical acceleration, g is gravity acceleration, the main vibration of the vibration power source 12 is the upward screening belt 1 and the material 4, therefore the dynamic force acting on the upward screening belt 1 is large, the vertical acceleration of the vibration of the material 4 is greater than 3g, the vibration amplitude of the material 4 is large, and the screening effect is good.

[0045] Further, the angle between the conveying direction 8 of the screening belt and the vibration direction 5 of the vibration knockers is 75-105°, the vibration direction 5 of the vibration power source 12 is almost perpendicular to the conveying direction 8 of the screening belt, the exciting force is almost entirely transmitted to the material 4 on the belt surface, the screening efficiency is improved, and the screening effect is good.

[0046] The above is only the preferred specific implementation mode of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A belt-type conveyer and sizer comprising a fixed frame, a conveyer and sizer belt, a vibration beater, a material guide plate and a reverse material guide plate, wherein the fixed frame is provided with the reverse material guide plate at the lower portion thereof, and characterized in that, The fixed frame body is internally provided with a conveying and screening belt, a vibration knock and a guide plate.

2. A belt conveyor screen according to claim 1, characterized in that The belt-type conveying and screening machine further comprises a feeding chute, an upper cover and a material blocking plate.

3. A belt conveyor screen according to claim 1, characterized in that The conveying and screening belt further comprises a driving wheel, a motor, a driven wheel, a redirection wheel, a compensation tensioning device and a supporting wheel assembly.

4. A belt conveyor screen according to claim 1, characterized in that The movable end of the damping spring is fixed on the vibration frame, and the fixed end of the damping spring is fixed on the fixed frame body.

5. A belt conveyor screen according to claim 1, characterized in that, The bottom of the fixed frame body is provided with a discharge port I and a discharge port II.

6. A belt conveyor screen according to claim 1, characterized in that The guide plate is in a herringbone shape and is arranged below the upward screening belt.

7. A belt conveyor screen according to claim 1, characterized in that The angle between the conveying direction of the screening belt and the vibration direction of the vibration knock is 75-105 degrees.

8. A belt conveyor screen according to claim 1, characterized in that The angle between the conveying direction of the screening belt and the vibration direction of the vibration knock is 75-105 degrees.

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