Discharging buffer device of vibrating screen

Abstract

The invention discloses a discharge buffer device of a vibrating screen, which comprises a vibrating screen main body and a buffer mechanism arranged at a discharge port of the vibrating screen main body, and the vibrating screen main body is used for screening materials. The buffering mechanism comprises a support, a damping assembly arranged on the support and a screen plate arranged on the damping assembly and located below a discharging port of the vibrating screen body, a plurality of screen holes are formed in the screen plate, and a driving assembly used for driving the screen plate to turn over and a locking assembly used for locking the screen plate are arranged at the damping assembly. The vibration screening equipment has the effect of improving the screening efficiency of the vibration screening equipment.

Description

Technical Field

[0001] The present application relates to the field of vibrating screens, and in particular to a discharge buffer device of a vibrating screen. Background Art

[0002] Vibration screening equipment is widely used in mining, chemical, building materials, metallurgy and other industries for screening and grading materials. During the screening process, the materials are separated on the screen surface by the vibration force. With the rapid development of the construction, water conservancy, road and other industries, the demand for sand and gravel aggregates is increasing. It is often necessary to use a vibrating screen to screen sand and gravel mud and water. The main purpose of sand and gravel mud and water screening is to separate the mixture of sand, gravel, soil and water to obtain clean sand and gravel aggregates, and at the same time to purify the mud and water for discharge or recycling. This process contributes to the effective utilization of resources and environmental protection.

[0003] In the related art, the vibrating screening equipment mainly includes a supporting frame, a screen frame arranged on the supporting frame, a screen installed in the screen frame, a vibrating motor installed at the screen frame and a buffer structure arranged at the discharge port of the screen frame. A shock-absorbing seat is installed between the supporting frame and the bottom of the screen frame. The discharge end of the vibrating screen is inclined toward the conveyor belt used to convey materials. The vibration of the vibrating motor causes the screen to shake, and the screened material falls onto the screen for vibration screening. The screened material falls to the conveyor belt for delivery. Since the falling speed of the vibrating screen is relatively high, the buffer structure at the discharge end of the vibrating screen mainly plays a buffering and shock-absorbing role. The buffer structure includes a receiving plate and a spring seat under the receiving plate. The receiving plate is inclined toward the conveyor belt and guides the screened material. The spring seat plays a buffering role to stably transfer the screened material to the conveyor belt.

[0004] Regarding the above-mentioned related technologies, there are the following defects: when the feed amount of the vibrating screen is large, the screening effect of the current vibrating screen is difficult to meet the screening needs, and the incompletely separated materials are directly guided to the conveyor belt through the buffer structure, which is difficult to meet the construction requirements. Whether by increasing the volume of the vibrating screen or adding the number of vibrating screens, a larger occupied area is required and the manufacturing cost increases. Therefore, the current vibrating screening equipment has the problem of low screening efficiency, so there is still room for improvement. Summary of the invention

[0005] In order to improve the screening efficiency of a vibrating screening device, the present application provides a discharge buffer device for a vibrating screen.

[0006] The present application provides a vibrating screen discharging buffer device that adopts the following technical solution: A discharge buffer device for a vibrating screen comprises a vibrating screen body and a buffer mechanism arranged at a discharge port of the vibrating screen body, wherein the vibrating screen body is used to screen materials, and the buffer mechanism comprises a support, a shock absorbing assembly arranged on the support, and a sieve plate arranged on the shock absorbing assembly and located below the discharge port of the vibrating screen body, wherein the sieve plate is provided with a plurality of sieve holes, and a driving assembly for driving the sieve plate to flip over and a locking assembly for locking the sieve plate are arranged at the shock absorbing assembly.

[0007] By adopting the above technical scheme, a sieve plate with sieve holes is used as a buffer mechanism at the discharge port of the vibration screen body, so that when the material after screening by the vibration screen falls on the sieve plate, the shock absorbing component not only plays a buffering role, but also makes the sieve plate vibrate up and down, further screening the material, which is beneficial to improving the screening efficiency of the vibration screening equipment. Since the material discharged from the vibration screen body continuously impacts the sieve plate, some of the material is easily stuck in the sieve holes of the sieve plate, and the problem of sieve hole blockage is prone to occur. The sieve plate is driven to turn over by the driving component, and the end of the sieve hole is blocked facing downward. At this time, the material continues to be discharged. While the material impacts the sieve plate, the material stuck in the sieve hole is also shaken off, thereby restoring the screening function of the sieve plate, reducing the steps of unblocking the sieve holes of the sieve plate, and is beneficial to maintaining the screening efficiency of the vibration screening equipment.

[0008] Preferably, the shock absorbing assembly includes a plurality of spring seats disposed at the four corners of the sieve plate and support seats located on both sides of the sieve plate. The sieve plate is rotatably connected to the support seats, and the support seats and spring seats located on the same side of the sieve plate are hinged.

[0009] By adopting the above technical solution, the spring seats are distributed at the four corners of the sieve plate, which is beneficial to evenly disperse the load borne by the sieve plate to the support through the spring seats. The support seat and spring seat on the same side of the sieve plate are hinged, which also improves the connection flexibility between the spring seat and the sieve plate, so that the support seat can swing relative to the spring seat to facilitate the adjustment of the inclination direction of the sieve plate.

[0010] Preferably, the support is provided with a plurality of traction mechanisms, and the plurality of traction mechanisms correspond one-to-one to the spring seats, the traction ends of the traction mechanisms are connected to the support seats, and the traction mechanisms pull the end of the support seats toward the support, and the inclination direction of the screen plate is changed by adjusting the traction forces of the two groups of traction mechanisms.

[0011] By adopting the above technical scheme, when it is necessary to transport the screened materials to construction areas in different directions, conveyor belts can be respectively arranged at both ends of the screen plate, and then the height difference at both ends of the support seat can be changed by adjusting the traction force of the two sets of traction mechanisms, and the inclination direction of the screen plate can be changed in conjunction with the shock-absorbing assembly, so that the two ends of the screen plate can swing according to the construction situation to change the landing point of the material. There is no need to add multiple vibration screening equipment, which is beneficial to improving the applicability of the vibration screening equipment.

[0012] Preferably, a positioning rod is hinged at the middle section of the support seat, and the positioning rod vertically penetrates the support seat downward.

[0013] By adopting the above technical solution, a positioning rod is hinged at the middle position of the support seat, and the positioning rod vertically penetrates the support seat downward, so that the support seat swings left and right with the positioning rod as the fulcrum, which is beneficial to improve the stability of the support seat and the screen plate, reduce the left and right shaking of the screen plate in the process of receiving materials, and help to improve the problem of materials deviating from the designated landing point.

[0014] Preferably, the traction mechanism includes a winding drum arranged below the support, an elastic rope connected to the winding drum, and a winding motor for driving the winding drum to rotate, and one end of the elastic rope away from the winding drum is connected to the bottom of the support seat.

[0015] By adopting the above technical solution, the elastic rope has elastic force and can be combined with the spring seat. The two together provide stable elastic force for the support seat and the screen plate, which is beneficial to improving the buffering effect of the buffer mechanism.

[0016] Preferably, the elastic rope passes through the corresponding spring seat vertically upward, and the elastic force direction of the elastic rope is consistent with the elastic force direction of the spring seat.

[0017] By adopting the above technical solution, the elastic rope is vertically passed through the corresponding spring seat, so that the elastic force direction of the elastic rope is consistent with the elastic force direction of the spring seat. The elastic rope and the spring seat jointly construct a shock absorbing system of the support seat, which is beneficial to improving the buffering effect of the buffer mechanism.

[0018] Preferably, the locking device includes a locking cylinder arranged at the support seat and a U-shaped channel steel arranged at the telescopic end of the locking cylinder, the locking cylinder is used to drive the U-shaped channel steel to move toward the sieve plate, and the U-shaped channel steel is used to clamp with the side of the sieve plate.

[0019] By adopting the above technical scheme, the U-shaped channel steel is driven to move toward the sieve plate by the locking cylinder, so that the U-shaped channel steel is clamped to the side of the sieve plate, thereby locking the sieve plate, which is beneficial to improve the stability between the sieve plate and the support seat. When the sieve plate needs to be turned over, the U-shaped channel steel is driven to move away from the sieve plate by the locking cylinder, so that the U-shaped channel steel is separated from the side of the sieve plate, thereby achieving the purpose of unlocking, so that the sieve plate can be turned over.

[0020] Preferably, a collecting groove is provided on the upper surface of the support, and the collecting groove is located directly below the sieve plate.

[0021] By adopting the above technical solution, a collecting groove is opened on the upper surface of the support to collect the materials screened out by the screen plate. At the same time, sufficient space is provided for the swing of the screen plate to facilitate the turning of the screen plate.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. By using a sieve plate with sieve holes as a buffer mechanism at the discharge port of the vibrating screen body, when the material after screening by the vibrating screen falls on the sieve plate, the shock absorbing component not only plays a buffering role, but also makes the sieve plate vibrate up and down, further screening the material, which is beneficial to improve the screening efficiency of the vibrating screening equipment; 2. The driving component drives the screen plate to turn over, with the blocked end of the screen hole facing downward. At this time, the material continues to be discharged. When the material impacts the screen plate, the material stuck in the screen hole will also be shaken off, thereby restoring the screening function of the screen plate, reducing the steps of unblocking the screen hole of the screen plate, which is conducive to maintaining the screening efficiency of the vibration screening equipment; 3. The height difference between the two ends of the support seat can be changed by adjusting the traction force of the two sets of traction mechanisms, and the inclination direction of the screen plate can be changed by cooperating with the shock-absorbing assembly, so that the two ends of the screen plate can swing according to the construction situation to change the landing point of the material. There is no need to add multiple vibration screening equipment, which is conducive to improving the applicability of the vibration screening equipment; 4. By hingedly connecting the positioning rod at the middle of the support seat, and the positioning rod vertically penetrating the support seat downward, the support seat can swing left and right with the positioning rod as the fulcrum, which is beneficial to improve the stability of the support seat and the screen plate, reduce the left and right shaking of the screen plate in the process of receiving materials, and help to improve the problem of materials deviating from the designated landing point; 5. By using the elastic rope as the main component of the traction mechanism, the elastic elastic rope can be combined with the spring seat, and the two together provide stable elastic force for the support seat and the screen plate, which is beneficial to improve the buffering effect of the buffer mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a discharge buffer device of a vibrating screen according to an embodiment of the present application.

[0024] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. support; 11. collecting trough; 2. vibrating screen body; 3. conveyor belt; 4. sieve plate; 41. sieve hole; 5. driving assembly; 6. locking assembly; 61. locking cylinder; 62. U-shaped channel steel; 7. positioning rod; 8. shock absorbing assembly; 81. supporting seat; 82. spring seat; 9. traction mechanism; 91. elastic rope; 92. winding motor; 93. winding drum. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-2 This application is described in further detail.

[0027] The present application embodiment discloses a discharge buffer device of a vibrating screen, referring to Figure 1 and Figure 2 , including a vibration screen body 2 and a buffer mechanism arranged at the discharge port of the vibration screen body 2. In this embodiment, the vibration screen body 2 includes a support frame, a screen frame installed on the support frame, a screen installed in the screen frame, and a vibration motor installed at the screen frame. A shock-absorbing seat is installed between the support frame and the bottom of the screen frame. The vibration motor vibrates to make the screen shake, and the screened material falls onto the screen for vibration screening.

[0028] In this embodiment, the buffer mechanism includes a support 1 located on one side of the support frame, a shock absorbing assembly 8 installed on the upper surface of the support 1, and a sieve plate 4 installed on the shock absorbing assembly 8 and located below the discharge port of the vibrating screen body 2, and the sieve plate 4 is evenly distributed with a plurality of sieve holes 41.

[0029] The shock absorbing assembly 8 includes a plurality of spring seats 82 disposed at the four corners of the sieve plate 4 and support seats 81 disposed at both sides of the sieve plate 4. The support seats 81 and spring seats 82 disposed on the same side of the sieve plate 4 are hinged. The sieve plate 4 evenly distributes the load to the support 1 through the spring seats 82 at the four corners. A rotating shaft is disposed at the middle position of the side of the sieve plate 4, and the rotating shaft is rotatably connected to the support seat 81 on the same side through a bearing. A driving assembly 5 is mounted on the upper surface of one of the support seats 81. The driving assembly 5 is specifically a rotating motor, and the output shaft of the rotating motor is coaxially fixedly connected to the rotating shaft of the sieve plate 4. When the sieve holes 41 on the surface of the sieve plate 4 are stuck by materials, the rotating motor drives the rotating shaft to rotate, thereby driving the sieve plate 4 to turn over, so that the opening of the blocked end of the sieve hole 41 is set downward. At this time, the vibrating screen body 2 continues to discharge the material. The falling material impacts the sieve plate 4 and also shakes off the material stuck in the sieve hole 41, thereby restoring the screening function of the sieve plate 4, reducing the steps of unblocking the sieve holes 41 of the sieve plate 4, which is beneficial to maintaining the screening efficiency of the vibrating screening equipment.

[0030] In this embodiment, two locking assemblies 6 for locking the sieve plate 4 are installed on each support seat 81. The two locking assemblies 6 are placed at both ends of the support seat 81. The locking device includes a locking cylinder 61 fixed on the upper surface of the support seat 81 and a U-shaped channel steel 62 fixed at the telescopic end of the locking cylinder 61. The notch of the U-shaped channel steel 62 faces the sieve plate 4. When the sieve plate 4 swings to be parallel to the support seat 81, the locking cylinder 61 drives the U-shaped channel steel 62 to move toward the sieve plate 4 so that the U-shaped channel steel 62 is clamped on the side of the sieve plate 4, thereby locking the sieve plate 4, which is conducive to improving the stability between the sieve plate 4 and the support seat 81. When the sieve plate 4 needs to be turned over, the locking cylinder 61 drives the U-shaped channel steel 62 to move away from the sieve plate 4, so that the U-shaped channel steel 62 is separated from the side of the sieve plate 4, thereby achieving the purpose of unlocking, so that the sieve plate 4 can be turned over.

[0031] In this embodiment, when the site needs to transport the screened materials to the construction areas at different locations, a conveyor belt 3 can be arranged at the support frame and the support 1 respectively, and the two conveyor belts 3 are placed at the two ends of the screen plate 4. In addition, a plurality of traction mechanisms 9 are installed on the support 1, and the plurality of traction mechanisms 9 correspond to the spring seats 82 one by one. The traction ends of the traction mechanisms 9 are connected to the ends of the support seats 81, and the traction mechanisms 9 pull the ends of the support seats 81 toward the support 1. By adjusting the traction forces of the two groups of traction mechanisms 9, the inclination direction of the screen plate 4 is changed, so that the two ends of the screen plate 4 can be swung according to the construction conditions to change the landing point of the materials. The ends of the screen plate 4 are tilted toward the adjacent conveyor belt 3, and the materials can be guided to the corresponding conveyor belt 3 surface through the screen plate 4.

[0032] In this embodiment, the traction mechanism 9 includes a winding drum 93 fixed below the support 1, an elastic rope 91 connected to the winding drum 93, and a winding motor 92 for driving the winding drum 93 to rotate. The winding motor 92 is installed at the bottom of the support 1, and the output shaft of the winding motor 92 is coaxially fixedly connected to the winding drum 93. The end of the elastic rope 91 away from the winding drum 93 passes through the support 1 and the corresponding spring seat 82 and is fixedly connected to the bottom of the support seat 81. The elastic force direction of the elastic rope 91 is consistent with the elastic force direction of the spring seat 82, so that it can cooperate with the spring seat 82, and the two together provide a stable elastic force for the support seat 81 and the screen plate 4, which is conducive to improving the buffering effect of the buffer mechanism. When adjusting the traction force of the traction mechanism 9 on the support seat 81, the winding motor 92 can be started to drive the winding drum 93 to rotate, and the elastic rope 91 can be wound or released at the same time, so that the support seat 81 and the screen plate 4 are tilted toward the end with greater traction.

[0033] In this embodiment, a positioning rod 7 is hinged at the bottom of the middle section of the support seat 81, and the positioning rod 7 vertically penetrates the support seat 1 downward, and the positioning rod 7 can slide in the vertical direction. The support seat 81 swings left and right with the positioning rod 7 as a fulcrum, which is conducive to improving the stability of the support seat 81 and the screen plate 4, reducing the left and right shaking of the screen plate 4 in the process of receiving materials, and is conducive to improving the problem of materials deviating from the designated landing point.

[0034] In this embodiment, a collecting groove 11 is provided on the upper surface of the support 1, and the collecting groove 11 is located directly below the screen plate 4, so as to collect the materials screened by the screen plate 4. In addition, the collecting groove 11 has a sufficient depth, and also provides sufficient space for the swing of the screen plate 4, so that the screen plate 4 can be turned over.

[0035] The implementation principle of a discharge buffer device of a vibrating screen in the embodiment of the present application is: When screening the material, start the vibration motor of the vibrating screen body 2, and the screen of the vibrating screen body 2 will vibrate accordingly. Then, the material to be screened is put into the feed port of the vibrating screen body 2, and the material slides along the inclined direction of the screen while being screened. The screened material is discharged from the discharge port of the vibrating screen body 2.

[0036] The screen plate 4 of the buffer mechanism receives the discharged material, and the shock-absorbing component 8 of the buffer mechanism not only plays a buffering role, but also makes the screen plate 4 vibrate up and down, further vibrating the material to screen the material. The screened material falls to the collecting trough 11 at the support 1, and the screened material slides toward the inclined end of the screen plate 4 to the conveying surface of the adjacent conveyor belt 3.

[0037] Since the materials discharged from the vibration screen body 2 continuously impact the screen plate 4, some of the materials are easily stuck in the screen holes 41 of the screen plate 4, and the screen holes 41 are easily blocked. When the screen holes 41 are blocked, the screen plate 4 can be turned over during the intermittent period when the materials are put into the vibration screen body 2 in batches, that is, when the vibration screen body 2 is not discharging materials.

[0038] When the sieve plate 4 needs to be turned over, the locking cylinder 61 drives the U-shaped channel steel 62 to move away from the sieve plate 4, so that the U-shaped channel steel 62 is separated from the side of the sieve plate 4, thereby achieving the purpose of unlocking.

[0039] Then, the rotating shaft is driven to rotate by the rotary motor, thereby driving the screen plate 4 to turn over, so that the blocked end of the screen hole 41 is opened downward. When the screen plate 4 swings to be parallel to the support seat 81, the U-shaped channel steel 62 is driven to move toward the screen plate 4 by the locking cylinder 61, so that the U-shaped channel steel 62 is clamped on the side of the screen plate 4, thereby locking the screen plate 4.

[0040] At this time, the vibrating screen body 2 continues to discharge the material. The falling material impacts the screen plate 4 and also shakes off the material stuck in the screen hole 41, thereby restoring the screening function of the screen plate 4 and reducing the steps of unblocking the screen hole 41 of the screen plate 4, which is beneficial to maintaining the screening efficiency of the vibrating screening equipment.

[0041] When the screened material needs to be transported to construction areas in different directions, the winding motor 92 is started to drive the winding drum 93 to rotate, and the elastic rope 91 is wound or released at the same time, so that the support seat 81 and the screen plate 4 are tilted toward the end with greater traction force, thereby changing the inclination direction of the screen plate 4 by adjusting the traction force of the two sets of traction mechanisms 9, so that the two ends of the screen plate 4 can swing according to the construction situation to change the landing point of the material. The end of the screen plate 4 is tilted toward the adjacent conveyor belt 3, and the material can be guided to the corresponding conveyor belt 3 surface through the screen plate 4.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A discharging buffer device for a vibrating screen, characterized in that: The invention comprises a vibrating screen body (2) and a buffer mechanism arranged at a discharge port of the vibrating screen body (2), wherein the vibrating screen body (2) is used for screening materials, and the buffer mechanism comprises a support (1), a shock absorbing assembly (8) arranged on the support (1), and a sieve plate (4) arranged on the shock absorbing assembly (8) and located below the discharge port of the vibrating screen body (2), wherein the sieve plate (4) is provided with a plurality of sieve holes (41), and a driving assembly (5) for driving the sieve plate (4) to turn over and a locking assembly (6) for locking the sieve plate (4) are arranged at the shock absorbing assembly (8).

2. The discharging buffer device of the vibrating screen according to claim 1, characterized in that: The shock absorbing assembly (8) comprises a plurality of spring seats (82) disposed at four corners of the sieve plate (4) and support seats (81) located at both sides of the sieve plate (4); the sieve plate (4) is rotatably connected to the support seats (81); and the support seats (81) and spring seats (82) located on the same side of the sieve plate (4) are hinged.

3. The discharging buffer device of the vibrating screen according to claim 2, characterized in that: The support (1) is provided with a plurality of traction mechanisms (9), and the plurality of traction mechanisms (9) correspond to the spring seats (82) one by one. The traction ends of the traction mechanisms (9) are connected to the support seats (81). The traction mechanisms (9) pull the end of the support seats (81) toward the support (1). The tilting direction of the screen plate (4) is changed by adjusting the traction forces of the two groups of traction mechanisms (9).

4. The discharging buffer device of the vibrating screen according to claim 3 is characterized in that: A positioning rod (7) is hinged at the middle section of the support seat (81), and the positioning rod (7) vertically penetrates the support seat (1) downward.

5. The discharging buffer device of the vibrating screen according to claim 3, characterized in that: The traction mechanism (9) comprises a winding drum (93) arranged below the support (1), an elastic rope (91) connected to the winding drum (93), and a winding motor (92) for driving the winding drum (93) to rotate, and one end of the elastic rope (91) away from the winding drum (93) is connected to the bottom of the support seat (81).

6. The discharge buffer device of the vibrating screen according to claim 5, characterized in that: The elastic rope (91) vertically penetrates the corresponding spring seat (82) upwards, and the elastic force direction of the elastic rope (91) is consistent with the elastic force direction of the spring seat (82).

7. The discharging buffer device of the vibrating screen according to claim 2, characterized in that: The locking device comprises a locking cylinder (61) arranged at a support seat (81) and a U-shaped channel steel (62) arranged at the telescopic end of the locking cylinder (61), wherein the locking cylinder (61) is used to drive the U-shaped channel steel (62) to move toward the sieve plate (4), and the U-shaped channel steel (62) is used to be clamped with the side of the sieve plate (4).

8. The discharging buffer device of the vibrating screen according to claim 1, characterized in that: The upper surface of the support (1) is provided with a collecting groove (11), and the collecting groove (11) is located directly below the sieve plate (4).

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