Aggregate vibrating screen

Abstract

The invention provides an aggregate vibrating screen, which relates to the technical field of aggregate screening, and comprises a screening box, two guide plates are fixedly connected in the screening box, screen meshes are rotatably connected in the two guide plates, a feeding box is fixedly connected to the upper surface of the screening box, a bottom plate is arranged below the screening box, and a supporting plate is fixedly connected to the lower surface of the screening box. Two pairs of connecting blocks are arranged above the bottom plate, pulleys are fixedly connected to the lower surfaces of the two pairs of connecting blocks, a feeding hopper is fixedly connected to the upper surface of the feeding box, dynamic force generated by vertical swinging of the two baffles can promote aggregate to rapidly move on the screen, the aggregate is in a continuously-changing motion state, and the screening efficiency can be effectively improved; compared with a traditional mode that vibration is generated only through a vibration motor, the screening mode is softer, noise pollution to the surrounding environment is smaller, and in addition, along with vertical swinging of the screen, impurities or small particles attached to the surface of the screen have the chance to be shaken off.

Description

Technical Field

[0001] The invention belongs to the technical field of aggregate screening, and more specifically, particularly relates to an aggregate vibrating screen. Background Art

[0002] Aggregate vibrating screen is a key device for aggregate screening in the construction, mining and other industries. It plays an important role in the aggregate processing process. It mainly uses the exciting force generated by the vibration motor to make the screen box and screen vibrate, so as to separate aggregates of different particle sizes according to the difference in the screen aperture, so as to meet the strict requirements of various projects on aggregate particle size distribution. In actual application, aggregate vibrating screen usually involves the following key technologies and structures:

[0003] 1. Screen box: It is welded from solid steel plates. As the main frame of the entire vibrating screen, it undertakes the important tasks of supporting the screen and accommodating the aggregate to be screened. It has sufficient strength and rigidity to cope with the pressure caused by vibration and aggregate weight.

[0004] 2. Screen: This is the core component for aggregate screening. The size of its aperture is precisely determined according to the particle size of the aggregate to be screened.

[0005] 3. Vibration motor: As the power source of the vibrating screen, it drives the screen box and the screen mesh to work together by generating exciting force of specific direction and magnitude. Its speed and exciting force can be flexibly adjusted according to the specifications, processing capacity and screening requirements of the vibrating screen.

[0006] 4. Support and shock-absorbing device: The support device is used to firmly place the vibrating screen in a suitable position to ensure its stability during operation. The shock-absorbing device is installed between the vibrating screen and the supporting structure. Its main function is to reduce the transmission of vibration generated by the vibrating screen during operation to the surrounding environment, reduce the operating noise of the device, and protect the supporting structure from damage caused by excessive vibration.

[0007] At present, in order to improve the screening performance and working efficiency of aggregate vibrating screens, many manufacturers have adopted a variety of technical means and device structure improvement measures. Some manufacturers use multi-layer screen stacking to achieve multi-level screening of aggregates and separate aggregate products of various particle sizes at one time. Some manufacturers optimize the control algorithm of the vibration motor to achieve precise adjustment of the vibration frequency and amplitude to adapt to the screening characteristics of different types of aggregates; some manufacturers focus on improving the material and manufacturing process of the screen to improve the wear resistance and service life of the screen.

[0008] However, the above-mentioned existing technical solutions still have some shortcomings. In terms of screening, the traditional method requires multiple single screening devices to work in series, which is cumbersome to use, and the screening efficiency still has a lot of room for improvement. In addition, the screen is prone to clogging, affecting the continuous and stable operation of the device. In terms of the screen movement mode, most of them only rely on the single vibration mode of the vibration motor, which cannot fully loosen the aggregate and prevent the screen from being blocked, resulting in the difficulty in further improving the screening accuracy. In terms of shock absorption, the shock absorption effect of some shock absorption devices is not ideal, and the adverse effects of vibration on the device's own structure and the surrounding environment cannot be effectively isolated. It not only increases the maintenance cost and failure risk of the device, but may also have a negative impact on the health and working environment of the operator due to noise and vibration pollution. In the uniform feeding link, the existing feeding method is difficult to ensure that the aggregate is evenly distributed on the screen, which can easily cause local overload or no-load of the screen, reducing the screening efficiency and accuracy, while also accelerating the local wear of the screen and shortening the service life of the screen. In response to these problems, this application proposes an innovative aggregate vibrating screen solution, which achieves efficient coordination of multi-stage screening, up and down swing of the screen, good shock absorption effect and uniform feeding through a unique structural design, thereby significantly improving the overall performance of the aggregate vibrating screen, improving screening efficiency and accuracy, extending the service life of the device, reducing the operating noise of the device and improving the working environment.

[0009] In view of this, the existing structure and defects are studied and improved, and an aggregate vibrating screen is provided to achieve a more practical purpose. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides an aggregate vibrating screen to solve the above problems.

[0011] An aggregate vibrating screen comprises a screening box, wherein two guide plates are fixedly connected in the screening box, and screens are rotatably connected in the two guide plates, a feed box is fixedly connected to the upper surface of the screening box, a bottom plate is arranged below the screening box, a support plate is fixedly connected to the lower surface of the screening box, two pairs of connecting blocks are arranged above the bottom plate, pulleys are fixedly connected to the lower surfaces of the two pairs of connecting blocks, a feed hopper is fixedly connected to the upper surface of the feed box, two connecting rods are movably sleeved between the two pairs of connecting blocks and two springs are fixedly connected, and the two springs are respectively connected to the two connecting rods. The connecting rod is movably connected, the front surface of the screening box is fixedly connected with a fixed plate, the front surface of the fixed plate is fixedly installed with a motor, the two guide plates are rotatably connected with round rods, the front ends of the two round rods are fixedly connected with gears, the middle ends of the two round rods are fixedly connected with bumps, the left and right sides of the screening box are fixedly connected with connecting plates, the lower surface of the feed box is movably connected with a bulk hopper and fixedly installed with a cylinder, the upper surface of the bottom plate is fixedly connected with two pairs of telescopic rods, the upper ends of the two pairs of telescopic rods are fixedly connected to the screening box, and the two pairs of telescopic rods are movably connected to the support plate.

[0012] Preferably, two card slots 1 are provided on the upper surface of the base plate, and the two card slots 1 are movably connected to two pairs of pulleys respectively. The back surfaces of the two pairs of connecting blocks are rotatably connected to two fixing rods, and one end of each fixing rod away from the connecting block is rotatably connected to a connecting shaft. The two groups of connecting shafts are respectively fixedly connected to the base plate and the support plate, and transmission belts are provided on the two gear ring sides, and the motor output shaft is fixedly connected to the lower round rod among the two round rods.

[0013] Preferably, the lower surfaces of the two screens are fixedly connected with arc blocks, the two arc blocks are respectively fitted with two protrusions, the upper surfaces of the two screens are fixedly connected with two baffles, the surfaces of the two connecting plates are provided with discharge ports, the right surface of the connecting plate on the right of the two connecting plates is fixedly connected with a guide block, the right surface of the bulk hopper is fixedly connected with a connecting column, and the connecting column is fixedly connected to the cylinder piston.

[0014] Preferably, a group of two card slots are opened on the inner wall of the bulk hopper, a group of diverter plates are fixedly connected to the inner wall of the bulk hopper, two limit blocks are fixedly connected to the upper surface of the bulk hopper, and two limit grooves are opened on the lower surface of the feed box, and the two limit grooves are movably connected to the two limit blocks respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, aggregates fall onto the surface of the screen through a feed hopper. Both screens are inclined and distributed in a stepped manner. Aggregates move along with the inclined guide. The apertures of the two screens are different in size, and a discharge port is provided on the surface of the connecting plate to correspond to the two screens. Aggregates are divided into a variety of different particle size levels through multi-stage screening, thereby improving screening efficiency, reducing the floor space occupied by the device, and avoiding the tediousness of requiring multiple single screening devices to work in series in the traditional method.

[0017] In the present invention, the dynamic force generated by the up and down swinging of the two baffles can prompt the aggregate to move quickly on the screen, making it in a constantly changing state of motion, which can effectively improve the screening efficiency. Compared with the traditional vibration generated by the vibration motor alone, this type of screening method is softer and has less noise pollution to the surrounding environment. This structure also causes less wear on the device and can extend the service life of the device. In addition, as the screen swings up and down, impurities or small particles attached to the surface of the screen also have the opportunity to be shaken off, reducing the frequency of manual cleaning of the screen and ensuring the continuous and effective operation of the screen.

[0018] In the present invention, the aggregate can be effectively dispersed by the parallel movement of the bulk hopper, so that the aggregate can be evenly distributed on the screen, avoiding the accumulation of aggregate in a certain area of ​​the screen, affecting the screening effect. In addition, uneven feeding will cause excessive pressure on certain areas of the screen, resulting in accelerated wear. When the aggregate is evenly distributed, the load on the screen and the protrusion is also more uniform. If the distribution is uneven, the protrusion needs to overcome the greater resistance of the locally accumulated aggregate, affecting its rotation efficiency, and then affecting the swing of the screen, affecting the screening efficiency. Uniform distribution can make the device components operate in a relatively stable working state, reduce the probability of failure, and extend the service life of the device.

[0019] In the present invention, the upper ends of the two pairs of telescopic rods fixed on the base plate are fixed to the screening box and movably connected to the support plate, so as to ensure the stability between the screening box and the base plate. The overall structure can absorb the vibration energy generated by the screen during operation, reduce the transmission of vibration to the surrounding environment, and reduce the noise and vibration during the operation of the device. By absorbing and buffering most of the vibration energy, the impact of vibration on various structures in the device can be effectively reduced, thereby extending the service life of the device. For components such as the screening box and the screen, vibration reduction can also reduce problems such as weld cracking and screen deformation caused by excessive vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the screening box of the present invention;

[0022] Figure 3 It is a schematic diagram of the bottom plate structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the connection block structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the feed box of the present invention;

[0025] Figure 6 It is a schematic diagram of the bulk hopper structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the screen structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the connecting plate of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the fixing plate of the present invention;

[0029] Fig.10 It is a schematic diagram of the guide plate structure of the present invention;

[0030] Fig.11 It is a schematic diagram of the bump structure of the present invention.

[0031] In the figure, the correspondence between the structure names and the figure numbers is: 1. screening box; 2. feed box; 3. bottom plate; 4. connecting plate; 5. screen; 6. feed hopper; 7. fixed plate; 8. motor; 9. support plate; 10. telescopic rod; 11. slot one; 12. connecting block; 13. spring; 14. connecting rod; 15. pulley; 16. connecting shaft; 17. fixing rod; 18. cylinder; 19. bulk hopper; 20. limit groove; 21. diverter plate; 22. slot two; 23. limit block; 24. connecting column; 25. transmission belt; 26. guide block; 27. gear; 28. baffle; 29. ​​guide plate; 31. round rod; 32. arc block; 33. protrusion. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0033] See also Figure 1 - Fig.11 The present invention provides an aggregate vibrating screen, comprising a screening box 1, wherein two guide plates 29 are fixedly connected in the screening box 1, and screens 5 are rotatably connected in the two guide plates 29, a feed box 2 is fixedly connected to the upper surface of the screening box 1, a bottom plate 3 is arranged below the screening box 1, a support plate 9 is fixedly connected to the lower surface of the screening box 1, two pairs of connecting blocks 12 are arranged above the bottom plate 3, and pulleys 15 are fixedly connected to the lower surfaces of the two pairs of connecting blocks 12, a feed hopper 6 is fixedly connected to the upper surface of the feed box 2, two connecting rods 14 are movably sleeved between the two pairs of connecting blocks 12 and two springs 13 are fixedly connected, and the two springs 13 are movably sleeved with the two connecting rods 14 respectively, a fixed plate 7 is fixedly connected to the front surface of the screening box 1, and a motor 8 is fixedly installed on the front surface of the fixed plate 7, round rods 31 are rotatably connected in the two guide plates 29, and the front ends of the two round rods 31 are fixedly connected to the gears 2 7. The middle ends of the two round rods 31 are fixedly connected with protrusions 33, the left and right sides of the screening box 1 are fixedly connected with connecting plates 4, the lower surface of the feed box 2 is movably connected with a bulk hopper 19 and a cylinder 18 is fixedly installed, and the upper surface of the bottom plate 3 is fixedly connected with two pairs of telescopic rods 10, the upper ends of the two pairs of telescopic rods 10 are fixedly connected with the screening box 1, and the two pairs of telescopic rods 10 are movably sleeved with the support plate 9. During use, the aggregate falls into the surface of the screen 5 through the feed hopper 6. The two screens 5 are inclined in design and distributed in a stepped manner. The aggregate will move with its inclined guide. The apertures of the two screens 5 are different, and a discharge port is opened on the surface of the connecting plate 4 to correspond to the two screens 5. Through multi-stage screening, the aggregate is divided into a variety of different particle size levels, thereby improving the screening efficiency, reducing the floor space of the device, and avoiding the tediousness of the traditional method of requiring multiple single screening devices to work in series.

[0034] Two card slots 11 are provided on the upper surface of the bottom plate 3, and the two card slots 11 are movably connected with the two pairs of pulleys 15 respectively. The back surfaces of the two pairs of connecting blocks 12 are rotatably connected with two fixed rods 17, and one end of each fixed rod 17 away from the connecting block 12 is rotatably connected with a connecting shaft 16. The two groups of connecting shafts 16 are fixedly connected with the bottom plate 3 and the supporting plate 9 respectively. A transmission belt 25 is provided on the annular side of the two gears 27. The output shaft of the motor 8 is fixedly connected to the round rod 31 located at the lower side of the two round rods 31. During the screening process, by starting the motor 8, its output shaft will drive the round rod 31 fixed thereto to rotate, and the gear 27 fixed on the surface of the round rod 31 will also rotate accordingly during the rotation process. The gear 27 will drive the transmission belt 25 connected thereto to rotate during the rotation process. At this time, the transmission belt 25 will drive the gear 27 on the other side to rotate, and the two round rods 31 are also in a rotating state. During the rotation, the round rod 31 will drive the two protrusions 33 fixed thereon to rotate. The two protrusions 33 are respectively fitted with the two arc-shaped blocks 32 fixed on the lower surfaces of the two baffles 28 to ensure the smoothness of the rotation of the protrusions 33. As the protrusions 33 rotate, the baffles 28 will be driven to swing up and down. The dynamic force generated by the up and down swinging of the two baffles 28 can prompt the aggregate to move quickly on the screen 5, making it in a constantly changing state of motion, which can effectively improve the screening efficiency. Compared with the traditional vibration generated by the vibration motor 8 alone, this type of screening method is softer and has less noise pollution to the surrounding environment. In addition, this structure causes less wear on the device and can extend the service life of the device. In addition, as the screen 5 swings up and down, impurities or small particles attached to the surface of the screen 5 also have the opportunity to be shaken off, reducing the frequency of manual cleaning of the screen 5 and ensuring the continuous and effective operation of the screen 5.

[0035] The lower surfaces of the two screens 5 are fixedly connected with arc blocks 32, and the two arc blocks 32 are respectively fitted with two protrusions 33. The upper surfaces of the two screens 5 are fixedly connected with two baffles 28. The surfaces of the two connecting plates 4 are provided with discharge ports. The right surface of the connecting plate 4 on the right side of the two connecting plates 4 is fixedly connected with a guide block 26. The right surface of the bulk hopper 19 is fixedly connected with a connecting column 24, and the connecting column 24 is fixedly connected to the piston of the cylinder 18. During the feeding process, by starting the cylinder 18, its piston will drive the connecting column 24 fixed thereto to move, and the connecting column 24 is fixedly connected to the bulk hopper 19, and the bulk hopper 19 also moves accordingly. The bulk hopper 19 is movably connected to the feed box 2 through the two limit blocks 23 fixed thereon. A group of card slots 22 opened on the inner wall of the bulk hopper 19 can be In order to effectively divert the aggregate, it is guided by a group of diverter plates 21. With the parallel movement of the bulk hopper 19, the aggregate can be effectively dispersed so that the aggregate can be evenly distributed on the screen 5, avoiding the accumulation of aggregate in a certain area of ​​the screen 5, affecting the screening effect. In addition, uneven feeding will cause excessive pressure on certain areas of the screen 5, resulting in accelerated wear. When the aggregate is evenly distributed, the load on the screen 5 and the protrusion 33 is also more uniform. If the distribution is uneven, the protrusion 33 needs to overcome the greater resistance of the locally accumulated aggregate, affecting its rotation efficiency, and then affecting the swing of the screen 5, affecting the screening efficiency. Uniform distribution can make the device components operate in a relatively stable working state, reduce the probability of failure, and extend the service life of the device.

[0036] A group of slots 22 are provided on the inner wall of the bulk hopper 19, a group of flow plates 21 are fixedly connected to the inner wall of the bulk hopper 19, two limit blocks 23 are fixedly connected to the upper surface of the bulk hopper 19, and two limit grooves 20 are provided on the lower surface of the feed box 2, and the two limit grooves 20 are movably connected to the two limit blocks 23 respectively. During the feeding and screening process, the device as a whole will vibrate, and the vibration force generated will be transmitted to the support plate 9. After the support plate 9 is subjected to pressure, it will drive a group of connecting shafts 16 fixed thereto to move downward, and a group of connecting shafts 16 will drive the fixed rods 17 rotatably connected thereto to move together during the movement, and the group of connecting shafts 16 located at the top and the group of fixed connecting shafts 16 located at the bottom will drive the two groups of fixed rods 17 to move relative to each other, and the two groups of fixed rods 17 will drive the two pairs of connecting blocks 12 fixed thereto to move relative to each other during the relative movement of the two groups of fixed rods 17 When the two pairs of connecting blocks 12 move, the two springs 13 will be squeezed during the movement. The two pairs of connecting blocks 12 are movably connected to the base plate 3 through the pulleys 15 fixed thereon. The two pairs of connecting blocks 12 are connected by two connecting rods 14. The upper ends of the two pairs of telescopic rods 10 fixed on the base plate 3 are fixed to the screening box 1 and movably sleeved with the support plate 9, so as to ensure the stability between the positions of the screening box 1 and the base plate 3. The overall structure can absorb the vibration energy generated by the screen 5 during operation, reduce the transmission of vibration to the surrounding environment, and reduce the noise and vibration of the device during operation. Moreover, by absorbing and buffering most of the vibration energy, the impact of vibration on various structures in the device can be effectively reduced, thereby extending the service life of the device. For components such as the screening box 1 and the screen 5, shock absorption can also reduce problems such as weld cracking and deformation of the screen 5 caused by excessive vibration.

[0037] Working principle:

[0038] In the first step, during use, the aggregate falls onto the surface of the screen 5 through the feed hopper 6. The two screens 5 are both inclined and distributed in a stepped manner. The aggregate will move along with the inclined guide. The apertures of the two screens 5 are different in size, and a discharge port is provided on the surface of the connecting plate 4 to correspond to the two screens 5. Through multi-stage screening, the aggregate is divided into a variety of different particle size levels, thereby improving the screening efficiency, reducing the floor space occupied by the device, and avoiding the cumbersomeness of the traditional method of requiring multiple single screening devices to work in series. During the screening process, by starting the motor 8, its output shaft will drive the round rod 31 fixed thereto to rotate, and the gear 27 fixed on the surface of the round rod 31 will also rotate during the rotation process. The gear 27 will drive the transmission belt 25 connected thereto to rotate during the rotation process. At this time, the transmission belt 25 will drive the gear 27 on the other side to rotate, and the two round rods 31 are also in a rotating state, and the two During the rotation, the round rod 31 will drive the two protrusions 33 fixed thereon to rotate. The two protrusions 33 are respectively fitted with the two arc-shaped blocks 32 fixed on the lower surfaces of the two baffles 28 to ensure the smoothness of the rotation of the protrusions 33. As the protrusions 33 rotate, the baffles 28 will be driven to swing up and down. The dynamic force generated by the up and down swinging of the two baffles 28 can prompt the aggregate to move quickly on the screen 5, making it in a constantly changing state of motion, which can effectively improve the screening efficiency. Compared with the traditional vibration generated by the vibration motor 8 alone, this type of screening method is softer and has less noise pollution to the surrounding environment. In addition, this structure causes less wear on the device and can extend the service life of the device. In addition, as the screen 5 swings up and down, impurities or small particles attached to the surface of the screen 5 also have the opportunity to be shaken off, reducing the frequency of manual cleaning of the screen 5 and ensuring the continuous and effective operation of the screen 5.

[0039] In the second step, during the feeding process, by starting the cylinder 18, its piston will drive the connecting column 24 fixed thereto to move, the connecting column 24 is fixedly connected to the bulk hopper 19, and the bulk hopper 19 also moves accordingly. The bulk hopper 19 is movably connected to the feed box 2 through two limit blocks 23 fixed thereon. A group of card slots 22 opened on the inner wall of the bulk hopper 19 can effectively divert the aggregate, and guide it through a group of diverter plates 21. With the parallel movement of the bulk hopper 19, the aggregate can be effectively dispersed, so that the aggregate can be evenly distributed on the screen 5, avoiding Aggregates accumulate in a certain area of ​​the screen 5, affecting the screening effect. In addition, uneven feeding will cause excessive pressure on certain areas of the screen 5, resulting in accelerated wear. When the aggregates are evenly distributed, the loads borne by the screen 5 and the protrusions 33 are also more uniform. If the distribution is uneven, the protrusions 33 need to overcome the greater resistance of the locally accumulated aggregates, affecting their rotation efficiency, and then affecting the swing of the screen 5, affecting the screening efficiency. Uniform distribution can make the device components operate in a more stable working state, reduce the probability of failure, and extend the service life of the device.

[0040] In the third step, during the feeding and screening process, the device as a whole will vibrate, and the vibration force generated will be transmitted to the support plate 9. After the support plate 9 is subjected to pressure, it will drive a group of connecting shafts 16 fixed thereto to move downward. During the movement, a group of connecting shafts 16 will drive the fixed rods 17 rotatably connected thereto to move together. The upper movable group of connecting shafts 16 cooperates with the lower group of fixed connecting shafts 16 to drive the two groups of fixed rods 17 to move relative to each other. During the relative movement of the two groups of fixed rods 17, the two pairs of connecting blocks 12 fixed thereto will be driven to move. During the movement of the two pairs of connecting blocks 12, the two springs 13 will be squeezed. The two pairs of connecting blocks 12 are movably connected through the pulleys 15 fixed thereon. On the base plate 3, two pairs of connecting blocks 12 are connected by two connecting rods 14. The upper ends of the two pairs of telescopic rods 10 fixed on the base plate 3 are fixed to the screening box 1 and movably connected to the support plate 9, so as to ensure the stability between the positions of the screening box 1 and the base plate 3. The overall structure can absorb the vibration energy generated by the screen 5 during operation, reduce the transmission of vibration to the surrounding environment, reduce the noise and vibration of the device during operation, and by absorbing and buffering most of the vibration energy, it can effectively reduce the impact of vibration on various structures in the device, thereby extending the service life of the device. For components such as the screening box 1 and the screen 5, shock absorption can also reduce problems such as weld cracking and deformation of the screen 5 caused by excessive vibration.

[0041] The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and to design various embodiments with various modifications suitable for specific uses.

Claims

1. An aggregate vibrating screen, comprising a screening box (1), characterized in that: Two guide plates (29) are fixedly connected in the screening box (1), and screens (5) are rotatably connected in the two guide plates (29); a feed box (2) is fixedly connected to the upper surface of the screening box (1); a bottom plate (3) is arranged below the screening box (1); a support plate (9) is fixedly connected to the lower surface of the screening box (1); two pairs of connecting blocks (12) are arranged above the bottom plate (3); pulleys (15) are fixedly connected to the lower surfaces of the two pairs of connecting blocks (12); and a feed hopper (6) is fixedly connected to the upper surface of the feed box (2); Among them, two connecting rods (14) are movably sleeved between the two pairs of connecting blocks (12) and two springs (13) are fixedly connected, and the two springs (13) are movably sleeved with the two connecting rods (14) respectively. The front surface of the screening box (1) is fixedly connected with a fixing plate (7), and the front surface of the fixing plate (7) is fixedly installed with a motor (8). The two guide plates (29) are rotatably connected with round rods (31), the front ends of the two round rods (31) are fixedly connected with gears (27), and the middle ends of the two round rods (31) are fixedly connected with protrusions (33). The left and right sides of the screening box (1) are fixedly connected with connecting plates (4), and the lower surface of the feed box (2) is movably connected with a bulk hopper (19) and fixedly installed with a cylinder (18).

2. An aggregate vibrating screen as claimed in claim 1, characterized in that: Two pairs of telescopic rods (10) are fixedly connected to the upper surface of the bottom plate (3); The upper ends of the two pairs of telescopic rods (10) are fixedly connected to the screening box (1), and the two pairs of telescopic rods (10) are movably sleeved to the support plate (9).

3. An aggregate vibrating screen as claimed in claim 1, characterized in that: The upper surface of the bottom plate (3) is provided with two card slots (11); The two clamping slots (11) are movably connected to two pairs of pulleys (15) respectively.

4. An aggregate vibrating screen as claimed in claim 1, characterized in that: The two pairs of connecting blocks (12) are rotatably connected to two fixing rods (17) at their back faces, and one end of each fixing rod (17) away from the connecting block (12) is rotatably connected to a connecting shaft (16); Wherein, the two groups of connecting shafts (16) are fixedly connected to the bottom plate (3) and the supporting plate (9) respectively.

5. An aggregate vibrating screen as claimed in claim 1, characterized in that: The annular sides of the two gears (27) are provided with a transmission belt (25); The output shaft of the motor (8) is fixedly connected to the lower round rod (31) of the two round rods (31).

6. An aggregate vibrating screen as claimed in claim 1, characterized in that: The lower surfaces of the two screens (5) are fixedly connected with arc blocks (32), and the two arc blocks (32) are respectively fitted with two protrusions (33); Wherein, two baffles (28) are fixedly connected to the upper surfaces of the two screens (5).

7. An aggregate vibrating screen as claimed in claim 1, characterized in that: The surfaces of the two connecting plates (4) are both provided with discharge ports; Among them, a guide block (26) is fixedly connected to the right surface of the connecting plate (4) located on the right side of the two connecting plates (4).

8. An aggregate vibrating screen as claimed in claim 1, characterized in that: A connecting column (24) is fixedly connected to the right surface of the bulk material hopper (19); Wherein, the connecting column (24) is fixedly connected to the piston of the cylinder (18).

9. An aggregate vibrating screen as claimed in claim 1, characterized in that: The inner wall of the bulk material hopper (19) is provided with a set of second slots (22); Wherein, a group of diverter plates (21) are fixedly connected to the inner wall of the bulk hopper (19).

10. An aggregate vibrating screen as claimed in claim 1, characterized in that: The upper surface of the bulk hopper (19) is fixedly connected with two limit blocks (23), and the lower surface of the feed box (2) is provided with two limit grooves (20); Wherein, the two limiting grooves (20) are movably connected to the two limiting blocks (23) respectively.

Images