A servo driven horizontal vibrating screen

Abstract

The present invention provides a servo-driven horizontal vibrating screen, which belongs to the technical field of crushing and screening, and includes a base, side plates are respectively arranged on both sides of the base, a first screen frame, a second screen frame and a third screen frame are arranged between the side plates from top to bottom, a first screen mesh is arranged on the upper surface of the first screen frame, a second screen mesh is arranged on the upper surface of the second screen frame, a third screen mesh is arranged on the upper surface of the third screen frame, three mounting seats are horizontally arranged in the middle between the second screen frame and the third screen frame, servo vibration motors are respectively arranged at both ends of the mounting seats, an eccentric block is arranged at the output end of the servo vibration motor, and the eccentric block is arranged inside the mounting seat. The servo vibration motor provided by the present invention can realize precise speed and position control, can quickly pass through the resonance frequency zone during starting and stopping, significantly reduce the fatigue damage of the structural parts caused by resonance, and extend the service life of the structural parts.

Description

Technical Field

[0001] The invention relates to the technical field of crushing and screening, and in particular to a servo-driven horizontal vibrating screen. Background Art

[0002] The elliptical track vibrating screen has the characteristics of large transmission volume of the linear track vibrating screen, and the circular track vibrating screen has the characteristics of good material layer dispersion and less blockage. Compared with the inclined vibrating screen, the horizontal vibrating screen has a larger effective opening. With the same screen surface area, the horizontal vibrating screen can obtain a larger effective screening area.

[0003] Sand and gravel particles on the screening surface of the elliptical trajectory horizontal vibrating screen (hereinafter referred to as the horizontal screen) have both a good material loosening effect and a higher conveying speed, which can effectively improve the vibrating screen output and screening quality. Therefore, the horizontal screen is widely used in the field of sand and gravel crushing and screening, and it is of great significance to study and improve the horizontal screen.

[0004] The elliptical vibration trajectory is formed by the superposition of three circular vibration trajectories, so the horizontal screen has three sets of exciting axes, such as Figure 1 and Figure 2 As shown: The three sets of exciting shafts of the existing horizontal vibrating screen are supported by bearings and bearing seats. Each set of exciting shafts is equipped with a gear, and the three sets of exciting shafts are forced to rotate synchronously by gear meshing transmission. All bearings and gears are placed in a sealed box and lubricated and heat-dissipated by lubricating oil.

[0005] The existing horizontal screen has the following problems:

[0006] 1. The horizontal screen has three sets of exciting shafts, and the exciting mechanism is relatively complex. Bearings, gears, transmission shafts, bearing seats, etc. are all precision parts, which are difficult to process or assemble, and the manufacturing cost of the whole machine is also high.

[0007] 2. The three sets of exciting shafts use gear meshing to force synchronous rotation. The horizontal screen has a very high vibration acceleration (about 6g). Under such high-intensity vibration, it is very easy to have problems such as gear wear, gear abnormal noise, gear temperature is too high, and lubricating oil temperature is too high. In severe cases, it can cause lubricating oil deterioration and loss of fluidity, tooth surface sintering, gear tooth breakage and other faults, ultimately leading to equipment overhaul and seriously affecting the normal operation of the entire machine.

[0008] 3. All bearings and gears need to be lubricated and cooled with lubricating oil, and dust prevention measures must be ensured. Therefore, precision parts such as bearings and gears need to be placed in a sealed box for lubrication and cooling. Under high-intensity vibration, lubricating oil leakage is very likely to occur, polluting the environment. In addition, lubricating oil needs to be maintained and replaced regularly, and the maintenance cost is high.

[0009] 4. The existing horizontal screen is driven by an ordinary motor or a variable frequency motor. The speed of the above two motors cannot be accurately controlled. During the start and stop process, the horizontal screen will vibrate at the resonance frequency for several seconds, causing great fatigue damage to the horizontal screen structure, resulting in a short service life of the structure.

[0010] 5. When the excitation angle or excitation force of the horizontal screen needs to be adjusted for screening different materials, the sealed box needs to be disassembled and the relative angle or weight of the eccentric block needs to be manually adjusted. The operation process is cumbersome, with high time cost and labor intensity, and there is also a risk of lubricating oil leakage. Summary of the invention

[0011] The purpose of the present invention is to provide a servo-driven horizontal vibrating screen to solve the technical problems mentioned in the background technology.

[0012] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0013] A servo-driven horizontal vibrating screen comprises a base, side plates are respectively arranged on both sides of the base, a first screen frame, a second screen frame and a third screen frame are arranged between the side plates from top to bottom, a first screen mesh is arranged on the upper surface of the first screen frame, a second screen mesh is arranged on the upper surface of the second screen frame, a third screen mesh is arranged on the upper surface of the third screen frame, three mounting seats are horizontally arranged in the middle between the second screen frame and the third screen frame, servo vibration motors are respectively arranged at both ends of the mounting seats, an eccentric block is arranged at the output end of the servo vibration motor, and the eccentric block is arranged inside the mounting seat.

[0014] Furthermore, a large reinforcing plate is arranged on the outer side of the middle part of the side plate, a small reinforcing plate is arranged on the outer side of the large reinforcing plate, and two supports are respectively arranged at both ends of the side plate.

[0015] Furthermore, four shock absorbers are respectively arranged on both sides of the base, the upper end surface of the shock absorber is connected to the bottom end of the support, and the lower end surface of the shock absorber is connected to the base.

[0016] Furthermore, a feed hopper is provided at the front end of the first screen, the bottom surface of the feed hopper is connected to the upper surface of the first screen, a first layer outlet is provided at the rear end of the first screen, and both sides of the first screen are connected to the side plates through pressure plates.

[0017] Furthermore, a second layer outlet is provided at the rear end of the second screen, and two sides of the second screen are connected to the side plates through a pressing plate.

[0018] Furthermore, a third layer outlet is arranged at the rear end of the third screen, a bottom outlet is arranged at the bottom end of the third screen, and two sides of the third screen are connected to the side plates through a pressing plate.

[0019] Furthermore, the mounting seat is configured as a cylindrical tube structure, the two ends of the mounting seat are respectively connected with mounting seat flanges, the mounting seat is provided with notches on the upper and lower sides of one end close to the eccentric block, and a cover plate is provided on the notch.

[0020] Furthermore, a servo vibration motor flange is provided on the servo vibration motor, the servo vibration motor flange is connected to the mounting seat flange through bolts, and the eccentric block is provided on the output shaft of the servo vibration motor.

[0021] Furthermore, the mesh openings of the first sieve are larger than the mesh openings of the second sieve, and the mesh openings of the second sieve are larger than the mesh openings of the third sieve.

[0022] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0023] 1. The present invention replaces the existing complex excitation mechanism by setting six servo vibration motors, and does not need to process or assemble precise bearings, gears, transmission shafts, bearing seats and other parts, which greatly reduces the difficulty of processing or assembling the horizontal screen and reduces the manufacturing cost of the whole machine.

[0024] 2. The present invention sets six servo vibration motors to be relatively independent in mechanical structure, and there is no gear meshing or transmission shaft connection structure, so even under high vibration intensity, there will be no wear of parts. As a mature product produced in batches, the failure rate of servo vibration motors is much lower than that of existing special excitation mechanisms, which can ensure the continuous and stable operation of the whole machine.

[0025] 3. The servo vibration motor provided in the present invention does not require lubrication oil and does not require a sealed box, so there is no problem of lubrication oil leakage and maintenance cost.

[0026] 4. The servo vibration motor provided in the present invention can realize precise speed and position control, and can quickly pass through the resonance frequency zone during starting and stopping, thereby significantly reducing fatigue damage to structural parts caused by resonance and extending the service life of structural parts.

[0027] 5. In the present invention, when the excitation angle or excitation force of the horizontal screen needs to be adjusted for screening different materials, the excitation angle of the horizontal screen can be adjusted by controlling the parameters through the electronic control system; the weight of the eccentric block can be adjusted by removing the cover plate. The operation process is relatively simple, and the time cost and labor intensity are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view schematic diagram of a vibrator in an existing horizontal vibrating screen;

[0029] Figure 2 It is a cross-sectional schematic diagram of a vibrator in an existing horizontal vibrating screen;

[0030] Figure 3 It is a structural schematic diagram of the horizontal vibrating screen of the present invention;

[0031] Figure 4 is a cross-sectional view of the horizontal vibrating screen of the present invention Figure 1 ;

[0032] Figure 5 is a cross-sectional view of the horizontal vibrating screen of the present invention Figure 2 ;

[0033] Figure 6 It is a schematic diagram of the screen frame of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the mounting seat of the present invention;

[0035] Figure 8 is a cross-sectional view of the horizontal vibrating screen of the present invention Figure 3 ;

[0036] Fig. 9 It is a working principle diagram of the horizontal vibrating screen of the present invention.

[0037] In the accompanying drawings, 1-gear, 2-shaft, 3-eccentric block, 4-machine body, 5-gear, 6-shaft, 7-eccentric block, 8-machine body, 9-bearing seat, 10-bearing, 100-base, 101-side plate, 102-large reinforcement plate, 103-small reinforcement plate, 104-support, 105-shock absorber, 20-first screen frame, 201-first screen, 202-feed hopper, 203-first layer outlet, 30-second screen frame, 301-second screen, 302-second layer outlet, 40-third screen frame, 401-third screen, 402-third layer outlet, 403-bottom outlet, 50-mounting seat, 501-mounting seat flange, 502-notch, 503-cover plate, 60-servo vibration motor, 601-servo vibration motor flange, 70-eccentric block, 80-pressure plate, 90-bolt, 50-1-1#mounting seat, 50-2-2#mounting seat, 50-3-3#mounting seat, 60-1-1-A#servo vibration motor, 60-2-2-A#servo vibration motor, 60-3-3-A#servo vibration motor, 60-4-1-B#servo vibration motor, 60-5-2-B#servo vibration motor, 60-6-3-B#servo vibration motor. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0039] like Figure 3-4 As shown, a servo-driven horizontal vibrating screen comprises a base 100, side plates 101 are respectively arranged on both sides of the base 100, a first screen frame 20, a second screen frame 30 and a third screen frame 40 are arranged between the side plates 101 from top to bottom, the first screen frame 20, the second screen frame 30 and the third screen frame 40 have the same structure, a first screen 201 is arranged on the upper surface of the first screen frame 20, a second screen 301 is arranged on the upper surface of the second screen frame 30, and a third screen 401 is arranged on the upper surface of the third screen frame 40, four materials with different particle sizes can be screened out by the first screen 201, the second screen 301 and the third screen 401, three mounting seats 50 are horizontally arranged in the middle between the second screen frame 30 and the third screen frame 40, servo vibration motors 60 are respectively arranged at both ends of the mounting seats 50, an eccentric block 70 is arranged at the output end of the servo vibration motor 60, and the eccentric block 70 is arranged inside the mounting seat 50.

[0040] In the embodiment of the present invention, a large reinforcing plate 102 is provided on the outer side of the middle part of the side plate 101, a small reinforcing plate 103 is provided on the outer side of the large reinforcing plate 102, the servo vibration motor 60 passes through the small reinforcing plate 103, the large reinforcing plate 102 and the side plate 101 in sequence and is connected to the mounting seat 50, and two supports 104 are provided at both ends of the side plate 101. Four shock absorbers 105 are provided on both sides of the base 100, and every two shock absorbers 105 are provided on one side of both ends of the side plate 101, the upper end surface of the shock absorber 105 is connected to the bottom end of the support 104, and the lower end surface of the shock absorber 105 is connected to the base 100, and the shock absorber 105 can make the vibration screen work stably.

[0041] like Figure 5-6As shown, the front end of the first screen 201 is provided with a feed hopper 202, the bottom surface of the feed hopper 202 is connected to the upper surface of the first screen 201, the rear end of the first screen 201 is provided with a first layer outlet 203, both sides of the first screen 201 are connected to the side plate 101 through a pressing plate 80, and both sides of the first screen 201 are fixed to the side plate 101 through a pressing plate 80, so that the first screen 201 is fixed. The material enters the first screen 201 from the feed hopper 202, and then undergoes primary screening, the screened material of the first screen 201 goes out from the first layer outlet 203, and the screened material of the first screen 201 enters the second screen 301. The rear end of the second screen 301 is provided with a second layer outlet 302, and the two sides of the second screen 301 are connected to the side plate 101 through a pressing plate 80, and the two sides of the second screen 301 are fixed to the side plate 101 through the pressing plate 80, so that the second screen 301 is fixed. The material entering the second screen 301 is screened for the second time, and the screened material of the second screen 301 goes out from the second layer outlet 302, and the particle size of the material going out from the second layer outlet 302 is smaller than the particle size of the material going out from the first layer outlet 203, and the screened material of the second screen 301 enters the third screen 401. The rear end of the third screen 401 is provided with a third layer outlet 402, and the bottom end of the third screen 401 is provided with a bottom outlet 403, and the two sides of the third screen 401 are connected to the side plate 101 through a pressing plate 80, and the two sides of the third screen 401 are fixed to the side plate 101 through the pressing plate 80, so that the third screen 401 is fixed. The mesh of the first screen 201 is larger than that of the second screen 301, and the mesh of the second screen 301 is larger than that of the third screen 401. The material on the third screen 401 is screened for the third time, and the material on the third screen 401 goes out from the third layer outlet 402, and the particle size of the material going out from the third layer outlet 402 is smaller than the particle size of the material going out from the second layer outlet 302, and the material under the third screen 401 goes out from the bottom outlet 403, and the particle size of the material going out from the bottom outlet 403 is smaller than the particle size of the material going out from the third layer outlet 402.

[0042] like Figure 2 and Figure 7As shown, the mounting seat 50 is set as a cylindrical tube structure, and the two ends of the mounting seat 50 are respectively connected to the mounting seat flange 501, and the mounting seat 50 is provided with a notch 502 on the upper and lower sides near one end of the eccentric block 70, and a cover plate 503 is provided on the notch 502. The upper and lower notches are reserved on the mounting seat near each eccentric block, and are sealed with a cover plate to facilitate the adjustment and maintenance of the eccentric block. The eccentric block 70 is located in the cylinder of the mounting seat 50, which can isolate the sand and gravel particles from contacting the high-speed rotating eccentric block. The servo vibration motor 60 is provided with a servo vibration motor flange 601, and the servo vibration motor flange 601 is connected to the mounting seat flange 501 by bolts 90, and the eccentric block 70 is arranged on the output shaft of the servo vibration motor 60. The servo vibration motor is set as an incremental servo vibration motor, and each servo vibration motor is equipped with a position sensor for the servo vibration motor to return to the origin, that is, to the initial position of the eccentric block. The mounting seat is matched with the side plate, large reinforcement plate, and small reinforcement plate step holes in sequence, and the servo vibration motor is matched with the mounting seat step holes. The bolts of the servo vibration motor pass through the servo vibration motor flange, small reinforcement plate, large reinforcement plate, side plate, and mounting seat flange in sequence to evenly distribute the excitation force and avoid stress concentration in the structural parts during operation, which may cause cracking.

[0043] like Figure 8 As shown, 1# mounting seat 50-1, 2# mounting seat 50-2 and 3# mounting seat 50-3 are all mounting seats, which are distinguished by numbers.

[0044] 1-A# servo vibration motor 60-1, 2-A# servo vibration motor 60-2, 3-A# servo vibration motor 60-3, 1-B# servo vibration motor 60-4, 2-B# servo vibration motor 60-5 and 3-B# servo vibration motor 60-6 are all servo vibration motors and are distinguished by numbers.

[0045] 1-A# eccentric block 70, 1-B# eccentric block 70, 2-A# eccentric block 70, 2-B# eccentric block 70, 3-A# eccentric block 70 and 3-B# eccentric block 70 are all eccentric blocks and are distinguished by numbers.

[0046] The 1-A# servo vibration motor 60-1 and the 1-B# servo vibration motor 60-4 are respectively connected to the two ends of the 1# mounting seat 50-1, the 2-A# servo vibration motor 60-2 and the 2-B# servo vibration motor 60-5 are respectively connected to the two ends of the 2# mounting seat 50-2, and the 3-A# servo vibration motor 60-3 and the 3-B# servo vibration motor 60-6 are respectively connected to the two ends of the 3# mounting seat 50-3.

[0047] The 1-A# eccentric block 70 is set on the 1-A# servo vibration motor 60-1, the 1-B# eccentric block 70 is set on the 1-B# servo vibration motor, the 2-A# eccentric block 70 is set on the 2-A# servo vibration motor 60-2, the 2-B# eccentric block 70 is set on the 2-B# servo vibration motor 60-5, the 3-A# eccentric block 70 is set on the 3-A# servo vibration motor 60-3, and the 3-B# eccentric block 70 is set on the 3-B# servo vibration motor 60-6.

[0048] Working principle of horizontal screen

[0049] like Fig. 9 As shown, the eccentric block positions A, B, C, and D correspond to points A, B, C, and D in the elliptical trajectory diagram respectively. The 1-A#, 1-B#, 2-A#, 2-B#, 3-A#, and 3-B# eccentric blocks are respectively installed on the 1-A#, 1-B#, 2-A#, 2-B#, 3-A#, and 3-B# servo vibration motors. Looking inward from the vertical perspective of the paper, the 2-A# and 2-B# eccentric blocks rotate clockwise, and the 1-A#, 1-B#, 3-A#, and 3-B# eccentric blocks rotate counterclockwise, and the speeds of all eccentric blocks remain equal in real time. When the six eccentric blocks rotate at the same time, the directions of the exciting forces generated by each of them change in real time, and they are superimposed or offset on each other to form a combined exciting force.

[0050] When the excitation angles of all eccentric blocks are exactly the same (such as eccentric block positions A and C), the combined excitation force of the vibrating screen is the largest and the amplitude is the largest; when the excitation force angles of 2-A# and 2-B# eccentric blocks are completely opposite to those of 1-A#, 1-B#, 3-A#, and 3-B# eccentric blocks (such as eccentric block positions B and D), the combined excitation force of the vibrating screen is the smallest and the amplitude is the smallest.

[0051] The sand and gravel particles are driven by the elliptical trajectory excitation force and are continuously thrown on the screen surface along with the vibrating screen. The sand and gravel particles move forward while being thrown up and loosely layered, completing the process of sand and gravel particle size classification and forward transportation over and over again.

[0052] The present invention uses six servo vibration motors to replace the existing complex excitation structure. The servo vibration motor can achieve precise speed and position control and can completely replace the mechanical transmission functions of the existing structure such as gears and transmission shafts.

[0053] 1. Start the horizontal screen

[0054] As shown in the figure: when the servo vibration motor is powered on, the external electric control system controls the servo vibration motor to return to the initial position. The rotation speed and angular position of the servo vibration motor are completely controlled by the external electric control system. The external electric control system controls the servo vibration motor to rotate counterclockwise by an angle α (excitation angle α), that is, the eccentric block position A, and then the 1-A#, 1-B#, 3-A#, 3-B# servo vibration motors rotate counterclockwise, and the 2-A#, 2-B# servo vibration motors rotate clockwise. During the startup process, the speeds of the six servo vibration motors are always synchronized. According to the above-mentioned working principle of the horizontal screen, after the eccentric block excitation force of the 1-A#, 1-B#, 2-A#, 2-B#, 3-A#, 3-B# servo vibration motors is superimposed, the horizontal screen can vibrate in an elliptical trajectory. When the servo motor speed reaches about 720rpm, that is, when the vibration frequency is about 12Hz, the horizontal screen reaches a normal working screening state.

[0055] 2. Feed screening

[0056] When the vibration frequency of the horizontal screen reaches the working frequency and stabilizes, sand and gravel particles are continuously fed into the feed hopper. The sand and gravel particles are continuously thrown and moved forward along with the vibrating screen and enter the first layer of screen from the feed hopper.

[0057] Under high-frequency vibration, sand and gravel particles smaller than the mesh size of the first layer of screen continuously fall through the mesh size to the second layer of screen, and sand and gravel particles larger than the mesh size of the screen continuously move forward and are discharged from the outlet of the first layer.

[0058] The sand and gravel particles reaching the second layer of screen continue to be thrown and move forward. The sand and gravel particles smaller than the mesh size of the second layer of screen continue to fall through the mesh size to the third layer of screen, and the sand and gravel particles larger than the mesh size of the screen continue to move forward and are discharged from the second layer outlet.

[0059] The sand and gravel particles reaching the third layer of screen continue to be thrown and move forward. The sand and gravel particles smaller than the mesh size of the third layer of screen continue to fall through the mesh size to the bottom outlet, and the sand and gravel particles larger than the mesh size of the screen continue to move forward and are discharged from the third layer outlet.

[0060] Through the screening effect of the three-layer screen, the sand and gravel particles are screened into four materials with different diameters, which are discharged from the first layer outlet, the second layer outlet, the third layer outlet, and the bottom outlet respectively. Usually, a conveyor is installed below the bottom outlet to collect the sand and gravel particles discharged from the bottom outlet and discharge them uniformly. Sand and gravel particles are continuously put into the feed hopper, and the screened sand and gravel particles are continuously discharged from the above four outlets.

[0061] 3. Horizontal screen stops

[0062] When the screening work needs to be finished, first stop feeding the sand and gravel particles into the feed hopper, and the horizontal screen continues to work for a short time until all the sand and gravel particles are discharged from the outlet. The electronic control system controls the servo vibration motor to decelerate synchronously to zero. During the stopping process, the speed of the six servo vibration motors is always kept synchronous, and the servo vibration motor is powered off to complete a screening process.

[0063] In actual application, the number of layers of the screen can be one layer, two layers, four layers... according to needs, which will not be repeated here.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A servo-driven horizontal vibrating screen, characterized in that: The invention comprises a base (100), side plates (101) are respectively arranged on both sides of the base (100), a first screen frame (20), a second screen frame (30) and a third screen frame (40) are arranged between the side plates (101) from top to bottom, a first screen mesh (201) is arranged on the upper surface of the first screen frame (20), a second screen mesh (301) is arranged on the upper surface of the second screen frame (30), a third screen mesh (401) is arranged on the upper surface of the third screen frame (40), three mounting seats (50) are horizontally arranged in the middle between the second screen frame (30) and the third screen frame (40), servo vibration motors (60) are respectively arranged at both ends of the mounting seats (50), an eccentric block (70) is arranged at the output end of the servo vibration motor (60), and the eccentric block (70) is arranged inside the mounting seat (50).

2. A servo-driven horizontal vibrating screen according to claim 1, characterized in that: A large reinforcing plate (102) is arranged on the outer side of the middle part of the side plate (101), a small reinforcing plate (103) is arranged on the outer side of the large reinforcing plate (102), and two supports (104) are respectively arranged at both ends of the side plate (101).

3. The servo-driven horizontal vibrating screen according to claim 1, characterized in that: Four shock absorbers (105) are respectively arranged on both sides of the base (100); the upper end surface of the shock absorber (105) is connected to the bottom end of the support (104); and the lower end surface of the shock absorber (105) is connected to the base (100).

4. The servo-driven horizontal vibrating screen according to claim 1, characterized in that: A feed hopper (202) is provided at the front end of the first screen (201), the bottom surface of the feed hopper (202) is connected to the upper surface of the first screen (201), a first layer outlet (203) is provided at the rear end of the first screen (201), and both sides of the first screen (201) are connected to the side plate (101) via a pressing plate (80).

5. The servo-driven horizontal vibrating screen according to claim 1, characterized in that: A second layer outlet (302) is provided at the rear end of the second screen (301), and both sides of the second screen (301) are connected to the side plate (101) via a pressing plate (80).

6. The servo-driven horizontal vibrating screen according to claim 1, characterized in that: The rear end of the third screen (401) is provided with a third layer outlet (402), the bottom end of the third screen (401) is provided with a bottom outlet (403), and both sides of the third screen (401) are connected to the side plate (101) through a pressing plate (80).

7. The servo-driven horizontal vibrating screen according to claim 1, characterized in that: The mounting seat (50) is configured as a cylindrical structure, and the two ends of the mounting seat (50) are respectively connected to mounting seat flanges (501), and the mounting seat (50) is provided with notches (502) on the upper and lower sides of one end close to the eccentric block (70), and a cover plate (503) is provided on the notch (502).

8. The servo-driven horizontal vibrating screen according to claim 1, characterized in that: The servo vibration motor (60) is provided with a servo vibration motor flange (601), the servo vibration motor flange (601) is connected to the mounting seat flange (501) via bolts (90), and the eccentric block (70) is arranged on the output shaft of the servo vibration motor (60).

9. The servo-driven horizontal vibrating screen according to claim 1, characterized in that: The mesh openings of the first sieve (201) are larger than the mesh openings of the second sieve (301), and the mesh openings of the second sieve (301) are larger than the mesh openings of the third sieve (401).

Images